Sonic is cooler then Mario on any given day of the year. Mario maybe funny but Sonic is cool ! I grown up with both of this iconic character, even as a kid I know I wanna grow up to be a cool guy like Sonic and a not a weird guy like Mario who eat unwholesome looking mushroom to grow strong.
Drug are bad. Winner dont use drugs.
Mario would win because Mario can accurately jump on Sonics head and kill him.
Sonic wouldn't be able to hit Mario at all, because now that Sonic is in 3D, he'd miss him all the time, he'd be like: "I can't hit Mario because I can't see, the camera is moving uncontrollably, maybe if I bash the buttons I'll hit him once?"
Mario is the undisputed king of games. Unfortunately for him Sonic just happens to be it's GOD. Sonic any day and every day of the week. And as for a game Sonic Adventure 2 for the Dreamcast. There is nothing as fun as fighting the Ultimate Lifeform fused to a space station in deep space with Super Sonic and Hyper Shadow.
Sonic was just more entertaining than Mario. I mean lets look at them for a second. Mario spends his time jumping on mushroom people and turtles trying to save some princess from an overgrown lizard. Sonic spends his time destoying evil robots to prevent some evil genius from collecting 7 gems that produce an almost infinite power and taking over the world. And on sidekicks who's Mario got Luigi a taller green clad version of himself with all the exact same abilites and Yoshi a little Dinosaur that can eat things. Sonic's buddys actually hadsome range. You have Tails who can fly and Knuckles who is stronger and a better fighter. Mario has nothing on Sonic...absolutley nothing.