Mario, he has been out since 1981 and sonic has been out since 1991. 10 year gap! NN96
It's hard to say, it depends on who would participate, Sonic is most popular in the UK and Europe, whilst Mario is popular in the US and Japan. But since Mario has been around longer than Sonic, he may have a slight advantage.
Mario is more famous because he has been around longer.
Mario and Sonic have always been rivals but also good friends.
sonic the hedgehog as he has been around longer
Mario has superior strength in comparison to Sonic however Sonic is faster than Mario.
Yes, infact Sonic has been in three games with Mario in them ( Super Smash Bros. Brawl, Mario and Sonic at the Olympic games, Mario and Sonic At the Winter Olympic Games) and one with Zelda and other characters such as Spyro and Snake and such.
Mario and sonic fusion is sarioc
Sonic the Hedgehog. Sonic has been here longer, who do you think has more fans?
Mario gets knocked out of the sky like every other regular character; unless he has a smash move too I still think Sonic could beat him because Sonic's smash move lasts longer.
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
sonic the hedgehog