Well yeah, but that's not my issue. Having Prime just plow through hordes of Decepticons with little to no effort and repeatedly defeating Megatron with ease doesn't offer any kind of tension in regards to his character having to actually struggle. Besides the first movie, the only times he actually struggled to win against someone was Sentinel Prime (who would have killed him if not for Megatron's intervention), and Lockdown (who had him pinned down with his own sword).
Plus, it diminishes the Decepticons' level of threat to an embarassing degree. TLK didn't help with that.