How was Jedi worse?
Okay:
1) Ewoks. How would an entire legion of the best troops not notice the ewoks setting up extremely elaborate traps which would have taken weeks to preprae.
2) Storm trooper armor. What's the point in that battle armor if it can't even stop rocks thrown by 3 foot tall teddy bears?
3) The entire arc of the Sith is empty because ultimately the Death Star is going to be destroyed and the Emperor with it regardless of what Luke does. The Death Star is taken out by Lando and Han. Luke has nothing to do with it.
4) Cheese. In one scene, Chewie actually does a Tarzan Howl!
5) Ridiculous battle. The entire trilogy rests on the fact that an entire legion of elite troops, heavily armed and backed by at-at-ST's can be beaten by a couple dozen rebel troops and stone age 3 foot tall teddy bears.
So yea, TPM is far better in my view than ROTJ.