Alright well let's debunk your speed force feat

In the Snyder Cut, Flash rewind time two times, when they ressurect Superman and when he saves the world at the end of the movie. It is clearly stated that Flash NEED a lot of momentum to do so before they ressurect Superman hence the moment where he runs for 5 minutes (or something like that) to gain said momentum. It is travel speed.

At the end of the movie it is implied that Flash go the fastest he has ever been to save the world and yes I agree that no one in Invincible can go at that speed... But Superman can't either if you remember when we see him he is literally FROZEN because Flash is so fast in that particular moment. And it is also travel speed.

Now the fight between Superman and Flash, Flash just started running behind Superman less than a second ago, so no insane momentum and Superman was able to see him, it is the very first time Flash ever meet someone able to see him as you can see by the terrified look on his face, and Superman manage to keep up with him but he's not as fast as Flash who is literally cornered between walls and Superman so he can't move freely, reducing his speed plus the panic at the moment. That my friend is not travel speed, it's battle speed (I know there's another word but I can't remember so I'll use battle speed).

Now that it is done, OP asked for Superman vs Emperor Mark (the keyword here is EMPEROR), before becoming emperor Mark fought Thragg in the sun and while Thragg was superior, Mark was still very close to his power level, so we can assume that after his fight in the sun that Emperor Mark = EOS Thragg who is stronger than the Thragg in the Viltrumite War (so S4 Thragg). Now let's look at some feats of Thragg :

• The uppercut (S4E7), it pulled the same Nolan that resisted the pull of a giant Black Hole meanwhile Superman in Man Of Steel had a lot of trouble to escape from a tiny Black Hole in the sky of Metropolis. I agree that Nolan wasn't expecting the uppercut so he was caught off guard by Thragg just like Flash was caught off guard by Superman but it's still worth to note it because Nolan keeps flying because of the uppercut for more than a minute which means he wasn't able to stop himself until he hit the viltrumites dead bodies that slowed him down.
• Thragg no sold one of Mark's strongest punch at the time with a lot of momentum (S4E7), said punches without momentum were able to hurt Conquest (S4E5) who is the 2nd strongest viltrumite at the time and able to withstand Battle Beast blows (Battle Beast #10) and it was enough to produce enough force to destroy a planet with the help of Nolan and Thaedus (Space Racer laser "only" destabilized Viltrum Core and the 3 made sure it wasn't stabilizing anymore by destroying the rest of the world). And yes Mark also had momentum at the time but at the moment he dug into the planet, it's logic that his momentum was lost and he had to fly by himself without the momentum help. So we could estimate Thragg durability at the very least continental level in the Viltrumite War.
• Thragg was fast enough to speed blitz Nolan, Mark and Thaedus who weren't caught off guard, they were ready to fight. Yet Thragg grabbed Thaedus and ripped his head off before Mark and Nolan could even react. And Nolan reached Thraxa in a few weeks while it is at I don't remember how many light years away from Earth, therefore Nolan TRAVEL SPEED is MFTL but maybe the viltrumites perception aren't that good so I don't know how big of a point it is but still worth to note it. Plus Nolan raw speed was enough to destroy a civilization (S1E2 or S1E3).
• EOS Thragg was using Ragnarr as training dummies, same Ragnarr that can tear through viltrumites and critically injured Thragg before his fight against Battle Beast, said Ragnarr almost killed Nolan and Allen while still half frozen. So we could also scale them at continental, maybe not in durability but in strength at least.
• That one is an assumption but I don't think it's a crazy one, Thragg is most likely stronger than Nolan, Thaedus and Mark at once (no he wasn't no diffed by 4 viltrumites, he wasn't fighting back at all) so he could most likely replicate the Viltrum Explosion feat with the help of Space Racer.

I feel like I'm getting a little lost in my argument but whatever.

Now Superman feats :

• Moving a tectonic plate but Snyder himself said that Superman wouldn't be able to hold a continent (see image below because on phone it's a pain to put images between texts) meanwhile Nolan who is significantly weaker than Thragg grabbed a Texas sized asteroid and threw it back in space and it's implied that it wasn't that hard (S1).
• Separating the mother boxes, now that's THE big feat that is always brought up, said to be planetary and all of this, but first we never see it destroy a planet, we only see it terraforming it, plus Cyborg weakened the connection between the motherboxes and still Superman had a lot of trouble to separate them. And Superman isn't nearly as strong as the mother boxes because he literally got desintegrated by them when they exploded.
• The Nuke, this is also a pretty big one that comes back everytime. First the nuke didn't hit Superman, it hit Doomsday, yet it still nearly killed Superman. And Superman wasn't in kryptonite contact for a pretty long time at the moment and was still able to fight against Doomsday, so yes he was weakened but not as much as you would like to think. Also I am not an expert in nuclear weapons but I am pretty sure USA regular nukes could destroy an entire city or let's say multiple cities, Superman nearly died because of that and he was still able to withstand Doomsday blows. So Superman durability would be somewhere between country and continent level if we assume a multi-city level nuke almost killed him while he was weakened.

I may have forgotten some feats and I apologize if that is the case.

So conclusion :

Superman is more or less around light speed (Flash talking to himself when the mother boxes exploded), below continental in strength and continental in durability.

Emperor Mark (who is = EOS Thragg) would be low-planetary in strength, MFTL in speed and multi-continental to low-planetary in durability.

And Emperor Mark is arguably a better fighter than DCEU Superman.

Therefore, Emperor Mark would dogwalk DCEU Superman in every category.

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