Bane takes it with moderate difficulty. He is stronger, more powerful, faster and better h2h fighter. Khan really didnt show much fighting skill and Bane is very skilled. Khan MIGHT have the edge in durability but Bane is much higher stats wise than Kirk and Spock. Bane 8/10.
I think the Kryptonians take it but it's not a stomp by any means. Their extreme speed and strength would be a real issue for the Avengers and they have insane levels of damage soak/durability. Based on the Smallville fight, there really isn't anything Hulk, Thor or Iron Man can do imo. Not enough damage output to take out a Kryptonian. Having Scarlet Witch and Dr Strange evens the playing field a little bit, but as others have said, Faora will probably speed blitz them. Kryptonian 8/10.