A very cool article on IGN...
http://retro.ign.com/articles/954/954165p1.html
The question could be ask. I don't think there is a bad Mario in the official series (don't say Mario time machine which is not officaly a Mario in the main series... do we understand ?) but at least we could tell our preferences. Personnaly, I think Mario Sunshine was not so great for a Mario game but it wasn't bad at all.