I just rewatched TF and having seen ROTF recently, and with both having sunk in let me give this in brief:
Remove the lame human moments (fat hacker, Torturo's crap) and the stupid Autobot hiding in the yard scenes, fix the shaky cam and TF is pure awesome entertainment.
And oh yeah, i am pretty sure that with barely any Autobots left in the galaxy, no leader would let Bumblebee die because the humans would get hurt. WTF? OK, i know that they didnt want to show Prime slaughtering humans, but there must have been a better way to solve that scene.
Anyway, ROTF has nothing on it. Torturo and the fight scenes were the only things that improved in ROTF. There was no plot, the Fallen was ******ed, lame and underused, Devastator was underused, Megan had fish lips (seriously, watching TF again the difference is obvious. She looks weird in ROTF) and Prime wasnt the compassionate leader we know, he was Megatron in red and blue!
The end.
But seriously Megan, take that crap out of your lips!