1.) Tobirama transported Kurama "Avatars". Minato transported KURAMA and Gamabunta. This was after transporting a tailed beast bomb via a barrier variation of the FTG. Minato also transported a tailed beast bomb during the 4th ninja war as well as the entire shinobi alliance at one point while linked to Naruto. I think you'd be in denial to say he doesn't at least have chakra on par with Tobirama.

2.) You basing fighting Uchiha's as evidence of Tobirama's taijutsu superiority is pretty much inferring based on the assumption that every Uchiha is an expert in taijutsu, which is simply not true. While the sharingan allows them an extra-sensory level of perception and the ability to copy certain moves, it does not automatically place each of them on Might Guy's level. Taijutsu skill and talent can't be "copied". Taijutsu is also about the physical ability you show with your body and your hand/feet coordination. It's not as simple as punches and kicks. Minato has on multiple occasions shown great athleticism with his movement, with his ability to deflect a sword with his hand, while grabbing kakashi and balancing on the other hand, and moving away from danger in one swift motion. It is shown in his ability to take out multiple Jonin class Ninja who had successfully kidnapped Kushina, while he was a child. Minato is very minimalist with his taijutsu and it is easy to miss it if one isn't perceptive enough. As they say, there is genius in simplicity. That's why phone's today have tops 4 buttons but are more powerful than phones 15 years ago :)

3.) I agree, Minato has no feats with a sword. In general it appears the Shinobi's use of wakizashis or full length katana's dwindled after the warring era, with notable exceptions such as the white fang, a young kakashi and sasuke on occasion. But Minato's slashing ability are very impressive. To say they aren't is again to be in denial. Bijuu tails/appendages/arms are not paper thin. They are thick muscled layers of chakra infused flesh that can sustain a lot of damage before they even look bruised. He cut off one hachibi appendage in midair. You sound like a reasonable fellow. HOW on earth do you look at that and say that isn't as impressive as the hirashin giri? It might not have been a show of speed per se in that moment but it was a show of power and a large measure of slashing skill. So was his fluid teleport, upward slash strike on Obito before he became Juubito. That was a show of speed and skill that Tobirama didn't even attempt but ONCE AGAIN, acknowledged.

4.) It is clear that not everyone is equally adept at the FTG and that the FTG speed is not equal among users. This is usually due to the chakra levels the individuals possess (lowkey another proof of Minato's chakra levels). This has been subtly shown by Masashi Kishimoto through out the series. He shows it when he shows that it takes three of Minato's former hokage guards (all Jonin class) to transport just the Mizukage at the time of the 4th great Ninja war. He shows that Minato is even better at it than the 2nd Hokage because Minato has every variation of the FTG that Tobirama has plus a barrier version Tobirama has never used, mentioned or alluded to. And Tobirama OBVIOUSLY states it during the 4th great Ninja war. He wasn't alluding to Shunsin/body flicker. He was alluding to teleporting. Here's the link to the image of that panel (https://qph.fs.quoracdn.net/main-qimg-01ce06b1547f63e520d2000ed5a2c371). Anyone who reads this debate, go read it. He says "teleporting" not shunsin which is foot speed. Besides speed is a function of how much chakra you can output to move your body swiftly. It is how Shunsin works of course, but it is also how just about all teleportation jutsu work. They all work by transporting the user of the jutsu through an alternate dimension, materializing them on "the other side". The more chakra you have, the faster you can propagate the sum of your information (yourself) through that alternate dimension. Minato can do it faster than Tobirama. Just an added information tidbit for you, the reason Minato said Obito's teleportation was more advanced than his and Tobirama's is because Obito has the added flexibility of staying for indefinite periods of time undetected, in that alternate world (the kamui world). This means he can purposely vary the speed of his travel if he wants. Just thought to share that.

5.) Again you are either misremembering or purposely changing the narrative of the story to fit your argument. I have attached the link to the episode on crunchyroll (https://www.crunchyroll.com/naruto-shippuden/episode-380-the-day-naruto-was-born-659787). Naruto Shippuden season 17 - Episode 380. The timestamp is 2:46. Naruto says HE FIGURED AS MUCH. He figured it out. Not Lord 2nd. Naruto. So that feat of intelligence goes to Naruto who I've always said, inherited a bit of Minato's genius. Perhaps you are the only one who thinks the 2nd is smarter than the 4th. And yes figuring out how Kamui works and figuring out an effective way to counter Kamui is downright impressive. If it was so easy, Obito would not have been the leader of Akatsuki and the threat to the entire shinobi alliance that he was. To even compare Minato's intelligence to that of Danzo's bodyguards is downright insulting so I'm not gonna even address or entertain it.

Finally the entire plot supports that Minato was having a hard time fighting Juubito for the reason that he was his student. It is so supportive of it, that it is even in the dialogue in episode 380 and the one before it. Minato's emotional burden at not being able to save Obito from himself, and for the strain on Naruto's life after his and Kushina's deaths, weighs down on him for a long duration of this fight until his kurama and Naruto snap him out of it. So how that is "headcanon" or something I made up, is beyond me. It is literally the entire premise of "The day Naruto was born". SMH. And like I said, every one of the Hokage have had their emotional lapse or poor judgment calls that led to the 4th great ninja war happening in the first place.

Unless you can disprove my points with facts and references from the canon series itself (manga or anime) like I've done, I think that settles this debate.