Iron Man can pick up a 60 ton tank, fly at supersonic speeds, can take a direct hit from tank's main gun and walk away from it (and multiple hits from SAMs), moves and reacts faster than we see Vader doing, and has more missiles and beam weapons than the entire 501st. What happened when he fought Cap again?
Batman's no slouch either.
One uppercut sends Killer Croc, himself a guy who's superhuman in size, toughness, and strength, what I would guess to be about forty-fifty feet through the air and only stops there from hitting a wall. Note that Croc is around a head taller than Batman, so in the area of six and a half feet tall at the least, and quit muscular. I'm not aware of his DCAU weight being given but he's put at 686 pounds in other works.
This ridiculously huge crocodile doesn't survive attempting to eat Bruce Wayne, note that it's head alone is larger than him. Oh, and there were two crocs, he kills them both.
These aliens have obvious super-strength.
Batman tanks two powerful punches and lands on his feet immediately after being thrown fifty feet through the air by one. He's highly durable and not going down easily.
Batman hits fifteen different targets with explosives in less than a second.
I realize Vader's got some tricks but people are severely underestimating the amount of BS a comic hero gets up to. If somebody with more game knowledge would like to provide some Master Chief feats to round this out? Not that I think it's really needed after those displays.