I haven't read everyone's posts, but I'm honestly pretty surprised that this topic even exists in the first place. Mario World and Sonic 1 share very little in common. It's literally like comparing apples and oranges. They're both good, but you can't compare them because they don't share any noteworthy common traits.
Is this some sort of attempt to fan up the last dying embers of the Sega vs Nintendo rivalry of the early 90s?