Dude in combat it's not even close. Batman has mastered every martial art known to man. All snake has is CQC. One martial art vs. dozens. One great martial artist vs. a man who can win world tournaments.

In stealth Batman can track Snake by his heartbeat, an ability Snake hasn't shown to have with any of his gadgets. Snake could use infarared but it would be much easier to hide against, especially with Batman already in a thick polymer suit.

In brains... rofl, yeah, let's not talk about Snake with brains. Batman is a genius strategist with a photographic memory. Snake is a fucking idiot.

The only advantage Snake has over Batman is in weapons training... Snake uses guns, but how many times has Batman pwned some of the best gunmen in the world?

Young Snake can take on Batman anyday. But the older Snake, I think he would get whooped.

i'd go so far as to say if guns were involved Deadshot would kick Snake's ass.

I mean the guy is Bullseye with guns.  Snake is just... way outmatched.  It'd be like having Nathan Drake fight one of the Gears of War guys.

Batman trained to have PEAK Physical and Mental perfection...

It's Batman hands down...those that say Snake because of CQC are just ignorant to the fact that Batman know CQC and almost all forms of Martial Arts...

C'mon people..BATMAN easily!