yeah I don't even know how this question even comes up in a conversation, lol.
Despite the fact that Bret (as much as I hate him) is much better overall than most people in the business, Batista wrestles a different style anyway, it's hard to compare.
Obviously a lot of guys, for instance, are beter technical wrestlers than, say, the Big Show... but the Big Show isn't a mat wrestler. Different style but he wrestles his style almost to perfection. Another example is Andre the Giant... yeah Bret is a better wrestler, but Andre is a better big man, lol. So it's kinda hard to compare...
But the answer is clearly bret...and it always will be.