It depends on who is playing the game rather than how high they can jump. Really, in all Mario games you(or who ever is playing the game) would be playing as Mario, so you could just restart the game at the last point that you saved until you win. And I bet you're(I also bet you would've said 'your' instead of 'you're' gonna say: "We were talking about if Mario and Luigi were not in a video game". Well video games aren't real, because: 1. No one can jump as high as Mario and Luigi. 2. What mushrooms are red with eyes? 3. If you jumped into a block, would coins really come out? 4. What kind of animal is Bowser?(Actually, he's supposed to somewhat look like a turtle.)
You could go on and on with that list. Anyways, the point is that if they did fight, it would be in a video game, not real life. So you'd probably be playing as Mario, so Mario would win. Duh.
Wow, I lolled at that argument.
You take this pretty seriously but I'll take in account that you've wrote this on the spur of the moment...cuz it's really funny...