Gamespot was insane when they made their review.
Story: The story is pretty much basic blah blah with a few twists. Eggman has a space fleet, Sonic comes to stop him, Eggman actually catches sonic for once, but sonic goes super, destroys the rest of the fleet, and chases eggman. But Eggman actually wins, sorta. After some events i won't spoil, Sonic becomes werehog, falls to Earth onto Chip, and the story goes on from there. The entire story is more than expected but not needlessly complicated. 8/10
Graphics: This is where this game truly shine. If you thought the CGI of 06 was good, the in-game graphics will make you faint. The lighting is perfect, the art style perfectly cartoony, and everything else in this game looks very well done. 10/10
Sonic Gameplay: The better half of this game. With a couple of rings and the x-button, sonic goes 300 mph, the fastest he has ever in a game. But he also has other abilities, like the quick step to move sideways without going slow, lightspeed dash *insert SA1/2 fanboys cheering*, and many others. And this with the speed is what makes it fun.9/10
Werehog Gameplay: Not as good as Sonic, but it is still FUN! Here's the layout, run around, beat up enemies, platforming, repeat a few times, then goal ring and or boss. It is a good formula, but not perfectly done. The enemies and stuff can get a little TO repetitive. You can practically tell when you fight and other stuff. So the gimmick of this game is not a bad one, just not perfect. 7.5/10
Sound: The voice acting of this game is great, except for Chip. FYI, chip's voice is not Silver's, but it still takes some time to get used to. Classic rings sound are back along with the spring tone, and the other effects are well done.
But some just fall short like the drift sound.
8.5/10
Rent or buy: If you like sonic and a 360, buy. Never played a sonic game, rent if you're interested.
Overall: A really fun and clearly underrated game where the others must have been bribed for the scores they gave it. 9.5/10