I play only a few games on my iPhone, but this game is downright awesome. My sons are also big fans of this game and we often compete with each other via Game Center. Anyway, check out the iMore Blog review that was posted yesterday via the link below:
Yeah, this game is not bad and plays well on the iPad 2 but i actually think NFSMW is better all round... Still worthy of download for sure. If you only have enough space for one, I would personally recommend NFSMW!