Neither! Fox beats them both! Or, you could find out in a Super smash brothers brawl match.
(Edit)
Fox is an opinion, which he is clearly not in the question.
Everyone knows this question is gonna go on forever, and some guy in the year 3000 is gonna find this question, and say, "Who the @%$# is Mario and Sonic?!" I don't think we should be screaming in each other's faces.
My opinion:
I like Mario better because I knew his games first and I don't really understand the Sonic games. I like them both, and I don't think they hate each other.
Here are some good points:
SSBB is not a good way to find this out, since it depends on who controls the player. I don't think you can set 2 players on CPU.
Sonic and Mario DON'T hate each other. They are besties and would team up to save anybody/anything.
Who cares? I just enjoy/suck at the games anyway.
-EpicDonuts
Mario!
Gaming websites like GameSpot and MMO-Champion list polls about video games, including polls about Sonic vs Mario. These polls can also be found in online gaming forums.
Mario has superior strength in comparison to Sonic however Sonic is faster than Mario.
You continue the festival ceremony.
Mario and sonic fusion is sarioc
Sonic because he was made first and Mario is trying to copy him... Sonic > Mario, in a lot of peoples minds.
Sonic Generations, Mario and Sonic at the Olimpic games, Sonic and the Black Knight
In the begining when Sonic did not exist, Mario games and Nintendo dominated the gaming world. SEGA decided the needed a mascot too. Then Sonic the Hedgehog was born. Sonic and Mario games fought furiously until SEGA over came Nintendo. Now they both are at level. They now work together to make the legendary Mario And Sonic games. The rivalry is just a remembarance and a appreciation of those days. Sega never overcame Nintendo; Sega just gave up and stopped making video game hardware.
yes in mario and sonic in the olimpipic games
No Mario will never kill Sonic. Never!
sonic the hedgehog
sure first was Mario and sonic at the olympic games then Mario and sonic at the olympic winter games then its Mario and sonic at the London 2012 olympic games