8/10.
I agree with Ebert saying this one had low expectations and just enjoy the show. And robot boxing is more entertaining and metal pwnage carnage to watch than the boring human counterparts. Why risk of human fighters paying medical bills on physical injuries when you can just put robots and smash each other?
Atom the main hero robot's vocals reminded alot of Bumblebee. While Zeus the main villain champ robot, seems invincible and resembles alot more menacing than Megatron himself. :P