Alright. I just finished the decepticon campaign. It "felt" longer than the autobot one, but character choice was far fewer. I made it a point to not go the "leader" or the "scout side kick" but whatever else was available, so;

I went brawl, skywarp, soundwave, soundwave, soundwave.

The decepticon campaign was more interesting, but the autobots had more character choices.

Funniest thing was watching breakdown get smashed by the trains and respawn. Repeatedly.