ROTS completely lacks subtext. Characters say exactly what they’re thinking and talk about what they’re going to do in the next scene/what they’ve done in previous scenes. On top of that, what they actually do say makes no sense. All of the characters are one dimensional and boring. The only arc in the movie took place in one scene, and it was because ‘remember Star Wars’.
Some people say the fan service in TFA is bad, well look at the ending of Revenge of the Sith! Hey look, it’s Darth Vader. It’s the Emperor! It’s Governer Tarkin! It’s the Death Star! It’s baby Leia! It’s the binary sunset!
The ending tricks you into liking it because it has things you already have an emotional connection to (mainly the Binary sunset.)
TPM has all of these problems too, but it’s way easier to sit through. The weird out of touch racism is fun to think about. The visuals are (mostly) pretty decent. The score is pretty phenomenal.
JEDIT: Attack of the Clones is just as bad as Sith. The ‘Remember Star Wars’ is pretty tame in comparison though.