This is just stupid. Why do you feel the need to compare them to the originals.
If we compared every movie we've ever watched and will watch to the best movies that were ever made, nothing would be considered good. But that's simply not true.
And the movies made enough sense that a kid could follow it, so if you couldn't make sense of it's barebones plot/characterization, I dunno what to tell you.
Oh I don't know...
BECAUSE THEY ARE DIRECT PREQUELS. It's not about the plot, that's only part of the mess. I can't do it any better than red letter media and if I try to repeat it all here I'm just going to typing a lot.
Go do yourself a favor and watch the red letter media clips. It pretty much covers every angle. Nothing in the prequels makes any damn sense when paired against the original movies.
Please describe Mace Windu to me. Go ahead, describe him. And I'm not talking about the robes or his skin.