People seem to forget that batman will win because he will easily adapt to counter whatever ironman throws at him. "But ironman has a suit." So does batman, he has several. We're talking about a [b][u][i]MAN[/i][/u][/b] who could single handedly take down the justice league, iron man is nothing when compared to that because he couldn't even defeat cap in Civil War, and he had shield and a team of Heros.