I haven't played the full game yet, but I have downloaded and played the demo. What I have experienced so far has made me place Sonic Racing on my wishlist, but I feel the experience is too far from a true Mario Kart experience to really deter me from purchasing Mario Kart U.
As I have stated before I am a huge fan of the wacky cartoonish racing games, the realistic racers bore me. Sonic Racing's major downfall, for me, is that it isn't cartoonish and wacky enough for my taste. Now, it is certainly a far cry from anything realistic. It does has some very wacky weapons and courses. However, when I play the demo I just get a more realistic sim vibe. I can't pin point why exactly... it's kind of irrelevant. This is just my own opinion on the game, and I will be buying Mario Kart U on launch day.
Sonic Racing is a great racer! I'm going to be buying it as soon as I can.
Edited by Phanto, 18 March 2013 - 08:38 AM.