Mario vs. Sonic...It didn't get any better than that.
i choose sonic over mario anyday. but dont get me wrong i like nintendo too. just sonic was more fun and fast paced when marion was all about breaking bricks with his head and stepping on things.
There is no way I could pick one over the other. My first home console was the NES with of course SMB/DH cart. Then SMB3 just rocked my world. It's probably my all-time favorite game, well atleast tied for favorite with 1 or 2 others...
Then...I got a Genesis with Sonic and that rocked my world again. Totally different than Mario in the sense of speed, but totally the same as Mario as it was a perfectly crafted 2-d side-scroller...