People are stannin hard for batman..
Tony could easily call jarvis for backup and get 30 suits to jump into the f!ght
Batman only has a shot if iron man spares his life.. Do remember, bane couldve easily k!lled dude but he spared his life to make him suffer
Iron man would make quick work of bane
And you do realize that Batman did came back, they fought and he left Bane unconsciousness floating on a plank.
That's not to say Batman doesn't have flaws, everybody does, it would be a good f!ght to see but I believe Batman would win but only by a margin if study time is allowed. Iron Man is good but if Jarvis is unable to sense his opponents for Tony then that can potentially have deadly consequences, just like if Batman gets rushed in without time to think, again, potentially deadly.
To my knowledge, Tony's suit is borderline EMP-proof and Jarvis can send multiple suits at will when Tony's in danger but if Batman finds a way to block that, and sap the suits energy, Tony has to relay on hand to hand combat and that wouldn't go so well.
If Batman doesn't have that luxury to drain energy, yeah, he can and will die but not without f!ghting and pulling his own tricks