Its not as hard as you're making it sound especially when he has boss toads who can jump great distances in a single leap. How would he reach Jman all the way in the air?
Lmao. He doesn't need to reach Jiraiya while he's in the air when Jiraiya won't be in the air for the whole match. He simply goes to the area where he lands and takes out his toad.
He'll need prepped kunai around to teleport to where he wants to go, that will be burned by Goemon or sunken by Yumi Numa. Jiraiyas not going to stand around and just let him prep, especially considering he knows this fighting style. Needle Jizo or Wild Lions Mane can knock away any Kunai thrown at him should he be ground level. Theres also Ma and Pa who can blow them away from any direction with Suiton and Futon.
Not really. All he needs to do is toss them around at any given time. If Jiraiya decides to waste chakra trying to get rid of Tobirama's markings, then all he need to do is toss some more away from the immediate area of their fight. Jiraiya can't stop him, and I hope you won't suggest that Jiraiya will chase down all these markings just so he can get Tobirama with one of his jutsu. And even then, Shunshin is enough to evade Goemon let alone Hiraishin.
They counter with their own Suiton.
When Tobirama combines his attack with Hiraishin? Nope. He hits them before they have a chance to react. Not to mention none of them have shown jutsu except Bunta and Gamakichi, and War Gamakichi isn't even allowed here since Jiraiya kicked the bucket before that.
Tobirama isn't the size of Gamabunta. He be a tiny spec you can't even see compared to that attack like Jiraiya and Tsunade are atop their boss summons. A senjutsu version where Jiraiya isn't weakened would be far larger, then factor in Ma adding Futon to it to increase its power and AoE even more then other toads (Gamakichi) summoned spitting oil too to increase it even more? Or Gamachiki spits his own Suiton to make a Goemon Tsunami? The blaze was so high off the ground in the air it exceeds the boss summons heights in that one and this mega version (or the Tsunami Goemon) would be gargantuan in size. Tobirama evading it that way is extremely unrealistic. Say he gets in the air above the blaze, he has to fall back down, no? If he tries to keep throwing the kunai and teleporting mid air they'll just change the trajectory of the attack to the sky and hes roasted. Yumi Numa can be used as a diversion at best or to sink the Kunai he has around and still, when he gets in the air, he has to come right back down on it while evading attacks, which is really unrealistic even for him.
So? He doesn't need to be anywhere near as large as Gamabunta to evade this, so that's an irrelevant point. Not to mention it won't get much larger since the size comes from the oil Bunta creates, and he's not the one being enhanced here. Not sure why you are mentioning stuff like "Gamakichi" and "other toads spitting oil" when the only toad who has shown the jutsu to spit oil is Gamabunta, and War Gamakichi isn't available to Jiraiya when he died before the War Arc, nor does he have any on panel feats of any kind of Suiton. Nor would Suiton even work. Why would you combine Suiton with fire and oil? Lmao. It does nothing.
So no, it's the standard size, and it's easily evaded. You haven't even given me a real reason as to why he can't dodge it, you just listed a bunch of random stuff that won't work, and then said that the method I presented was unrealistic with no explanation as to why it is. Unless you believe Tobirama can't toss a Kunai half or less of the width of this flame, then there is no way he can't dodge it. If you say that he can't, then I'll call BS since people in real life can throw farther than that. You only addressed the height part, but ignored the side to side part.
Adding Ma's Fuuton won't increase it's AoE when the wind is a speck compared to the oil and the fire. Lmao. It feels like you are just randomly naming off things without actually thinking to see whether or not it'd actually work.
Anyway, I do think Tobirama is overall superior, but I'm arguing for the sake of Jman just because no one else is.
No one else is because Jiraiya stands no chance. Your arguments show that.