Did you play the game he linked to? The guy made the game so that each character's gameplay was the same as it was in his or her respective game (although Link got the downward thrust from his second game, which I don't remember him having in the side scrolling parts of his first game...He could jump in those parts though, right?) But yeah; he did a little more work than just changing the sprites. I think it said it took him several months to do, in fact. Anyhoo...

Wuv, Yer Mom