Unless you give Panther some kind of stat and feat guide to go off of then Turtles win 10/10 due to having 4 members as opposed to team Marvel's 3. He is completely useless in this fight and anybody who says "but he can run as fast as a motorcycle" or "he is stronger than Cap, cause he pulled the shield down" should be put on word probation.
This would be a badass fight imo, like a really damn good one I think. And yeah, putting BP in this kinda fight isnt a big deal as he is pretty much an exact equal in stats and skills to teammates. I think he should be replaced with Nomak from Blade 2. For a 2 marvel 2 blade. Characters.
If I were to conjecture though. I would probably give Marvel the edge due to pretty much equipment. To many sci-fi metals on their team basically.And if Black Panthers suit works the way I understand it, then his suit should allow him to basically tank anything anybody throws at him and probably one shot k.o. everybody here due to its nature. Based off what we know about him and his equipment You would have to be Thor levelbor higher to even injure him.