The Transformers DS game (Autobots or Decpticons version) isn't officially reviewed yet by the big guns (IGN.com, GameSpot.com, 1up.com). From the users rankings though, it's abnormally high (8.5/10).

I messed around with the Decepticon pack and it felt like a re-skinned version of the previous Spider-Man movie games. It wasn't bad at all though.