It's not so much the quality of this game. The Sonic community on gamefaqs just moves to whatever board happens to be for the most current game. --- Not changing this signature until a new F-Zero is announced. *started 6/18/10* F-Zero > Mario Kart. If you disagree, it's because you're bad at F-Zero.
Probably has to due with the fact that it's a downloadable deal. I just got it last night. It borrows a lot from the old Sonic games, but it's still pretty good. I love the speed of the game. Still fast, but not out of control fast.