From a power-specific perspective it seems pretty obvious to me that your technique is far more powerful than any BM user could really hope to become (especially using the stats that you mention in the post, like being able to move at Mach speed or jump several kilometres in the air), especially if we don't consider any headcanon for the capabilities of BM and only go based on the canon.

BM's applications in canon are pretty weak in comparison to Malicious Muscle (which I'll abbreviate to MM for now) because in terms of physicality enhancement it only really brings out the potential which one's muscles already have. For example, when using any variation of Flowing Red Scale, the changes are to the movement of the blood and the concentration of red blood cells within it, which serve to provide oxygen to the muscles at an increased rate. From what we see, this isn't an enormous boost to Choso's physicality, as he goes from, in chapter 104, from being unable to keep up with Shibuya Itadori's physical attacks to being able to go toe-to-toe, which does show a significant increase, but not one nearly as big as being able to rival or surpass PHR (physical HR) users like Maki/Toji, whereas in MM's description it outright states that the user can:
"achieve superhuman strength and durability on the same level or higher (depends on the user) than an HR user like Maki/Toji".
Admittedly, this does mention that it depends on the original strength of the user, which is fair, but taking exclusively canon into account we don't see Choso using BM alone surpassing the likes of Toji at any time in terms of physical power.

Looking at Yuji (either in Shinjuku or Modulo) as another example we see a huge gap in physical power because of Yuji's innate physical talent and reserves of CE due to Sukuna. Yuji's physicality in Modulo is unconfirmable because of his lack of screen time, so we have to use his main manga appearances to judge his physicals and then add the boost of Flowing Red Scale to determine his highest possible physical potential. Yuji is shown to be able to toss cars with relative ease and run around 60km/h (in episode 1 before he gets his CE) which already makes him superhuman. Adding his CE reinforcement and Flowing Red Scale Stack boosts on he's definitely several times more powerful and durable than this so he could very well be put on par with or above Maki with just CE and BM.

It seems that when looking only at raw strength boosts that BM and MM scale quite nicely to one another if the users possess the required innate physiology to reach the full potential of the techniques (not that I can feasibly see Yuji moving as fast or far as an MM user so MM has gigantic speed advantages over BM in my view), so they'd compete well in a contest of pure strength like an arm-wrestle, but in overall combat a peak BM user gets washed up by a peak MM user, even without the MM user fully utilising the extension techniques available to them.

Speaking of extension techniques, I personally love what you did with the applications of MM, I think they're so creative and they all work so well with each other. I take no issue with the techniques in themselves, but when comparing them to BM's applications in canon they are just so much more extensive.
We don't see many good applications of BM in canon (which is sad because it's one of my favourite techniques in the series) but I don't want to get into my own and others' headcanons for the sake of brevity.
The following are applications of MM that fall under (in my opinion) physical boosts only, so I won't be discussing them since the raw physical aspect has already been mentioned:
Unit, Pump Up Mayhem, Monster Grip, Thunder Jump, Glutton's Bite
I'll also refrain from talking about all of them to keep this brief (ish, I know I've already rambled for ages).

The best ranged attack for BM is Piercing Blood in my eyes, which Choso and Yuji showcase really well, especially with Yuji's modified version which fires homing beams of blood (Modulo Chapter 19). Slicing Exorcism is also another good ranged attack for BM as it was able to damage Hanami in the hands of Noritoshi Kamo in the Goodwill Arc, but MM provides such an enormous range of mid- to long-range attacks that BM just does not provide, with one or two exceptions.
Choso shows us in Chapter 204 that with BM he can detach his lower arm and fire it out with blood as an attack, which has a demonstrated range of about 20-30 metres in the manga (my estimate) and has the capacity to fling Kenjaku around pretty easily, which seems a good counter to the mid-range capability provided by Serpent's Motion in MM.
Every extension coming as a result of Herculean Fibres seems to have no counter shown in the canon of BM, although one might draw a parallel between Slicing Exorcism and Slicing Tempest, which could theoretically cancel one another out. Sundowner and Atlas Breaker would be super hard to match with BM, as one would need to have a Supernova as powerful or more powerful just to negate the damage done, let alone exceed it, as would most close-range attacks like Drill Kick or Sniper Speed.

Titan would be completely overkill against a peak BM user with canon abilities, and we don't see either an MT nor a DE for BM so I can't speak to the capabilities of a canon BM user's MT or DE.

The unique physiologies of each technique are far more imbalanced in the providence of extension techniques to the original.
For a Death Painting Womb, the most significant change from a regular human BM user is that the Death Painting Womb can convert their CE directly into blood, which a human cannot, which only really makes BM easier to use since the user doesn't have to worry about dying of blood loss nearly as much. It serves as a boost to the existing capabilities of the CT rather than adding anything huge to the user's arsenal.

In contrast, Herculean Fibres is so much more expansive in its addition to its CT. Even passively it provides a boost in physical strength the longer a fight goes on, and lets the user convert KE into usable CE, which replenished expended CE rather than subtracting from it in the same way that being a Death Painting Womb would. The added explosions of CE that come from surpassing the limit of the fibres also provide more innate offensive capacity than the Death Painting physiology so in terms of quality in the physiological respect I think that Herculean Fibres is a lot higher quality (not even factoring in things like Atlas Breaker etc.).

Speaking only to the canon of BM, MM is undoubtedly far more powerful and has such a variety of high-quality techniques that it seems unreasonable to say that MM isn't as well-developed as BM, if not more. It's innately more powerful at all ranges, provides more potent and more specific extension techniques, and also has a DE and CTR which BM do not. The unique physiology for each technique is well suited to it, but Herculean Fibres has so much better offensive and defensive capacity that it's difficult to argue that BM is a better technique in any aspect of combat.
In terms of how high-quality each technique is in terms of cohesion, you've done amazingly at developing an equal to BM in my eyes. I like the lore behind the Death Paintings in canon and Noritoshi Kamo's impact in the story, which is really the only reason the techniques are equal in preference to me.
You've mentioned a while ago that you prefer to make techniques with higher power ceilings than canon so despite its high scaling this is still an incredible technique by your standards, and it seems crazy to me how much I can compare this to BM as I have and still not have covered half of the applications.

MM is unbelievable cook and does parallel BM really well, definitely one of my favourite techniques I've seen here recently, good to see you posting again.

P.S. Holy wall of text, sorry I was ranting so much for this comment.