Bingowings said:
They are all space opera which has a dose of suds in it.
The difference between ANH and ESB and the rest is the earlier films look like they take place in a real war between real armed forces (albeit in a more technologically advanced realm) whereas starting with ROTJ and reaching it's zenith with the PT the later films look like cartoon battles between squid monsters and bathroom equipment.
As a fan of the space battle scenes in Return of the Jedi, I take umbr-- ...yeah, all right, you have a point.