Well, to tell you the truth, I am a big fan of both Sonic and Mario. But I slightly like Sonic better. But that doesn't matter. The main reason why I like Sonic games better than Mario games is because replay value. Most Mario games around have very little or even no replay value. Sonic games, on the other hand, are just the opposite, and are JAMPACKED with replay value. Don't get me wrong. There has never been a Mario game that has more replay value than a Sonic game.
Otherwise, Sonic and Mario are pretty much equal.
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