However, lets look at something shall we.
We all know that Lucas couldn't write his way out of a paper bag. He wrote the PT and the dialogue sounds like it was written by a second-grader. However, and please understand that I LOVE ANH, the dialogue in this entirely Lucas-sripted film is pretty bad in comparison to the brilliant characterization in Empire and to a lesser extent, Jedi. But WAIT A SECOND, A New Hope was such an incredible film and the bad dialogue never seems to get in the way......why? Could it be that the film is supported by the true substance of the elaborate sets and minatures. Absolutely.
The actors have some(physical)"thing" to act with which cancels out the lame writing.
In the PT, even though the actors have true talent, they have nothing to act with.....just a bunch of green screens.
When a majority of a film is based around the universe it creates, the universe should actually exist.