I'm a huge Ironman fan because it's an "ordinary" person in that suit - which could be you or I. The reason I like Batman is because he's an "ordinary" person who trained in martial arts - just like you or I could.
Both are smart. Both have money. Take those 2 things and bam! You've got a super-something right? But what i've learned over the years in MMA, is that a weapon is just an extension of your body (philipino kali). So Ironman is just an extension (was) of Tony's body. Without it, Tony was helpless. Batman's suit and gadgets are an extension of HIS body. But he is still very able without them.
Now Tony Stark has his suit as part of himself, which is a little different and gives him an advantage. But Batman is always Batman, with or without the suit. A while back they had a show that talked about MMA and they pitted the different styles against eachother. It turns out - to no one's surprise, that 'western boxing' has the punch that delivers the most power (impact pressure). But the style of ninjitsu, a samurai who has been trained for stealth, had the ability to equally distribute their body and gear weight on 1 foot so evenly that it was almost impossible to think it was possible!
IM always has issues with his power cell or suit, that's how you control him. Batman is only human, that's how you control him. But, like I said, being a fan of both, i'd have to be inclined to say Batman wins. Out of suits, no quetsions batman over ironman. In suits, Ironman could win, but unlikely because he has no real combat experience.
I'd also like to point out that if you guys remember Batman Vs Spawn and Spawn vs Batman (DC and the Image version) they have different endings.
Go Batman! (He always get's the REAL fine women!)
*I even had to change my avatar hahaha I use batman in other forums
You can never say never and never say always.