Why does everyone think Sonic the Hedgehog for Xbox360 and PS3 is bad

Well it's enjoyable, but it did leave a sour impression when I played. The game has numerous glitches which really should have been fixed before being sold, such as falling through and getting stuck in walls with no explanation. The loading times are atrocious, your stuck watching it load for longer than you play. And the missions in town can get boring as since it's a Sonic game you would think they'd have more fast paced action. The graphics are of excellent quality, as should be expected from a PS3 Xbox360 game, but all in all don't buy the game unless you're sure of the game, best to rent it first if able to, and if you want, purchase it afterwards.