In terms of difficulty I think a new hope was rather more difficult especially when you have a freaking ace pilot darth Vader on your arse. What was it? 2m shaft?
Is a one of a shot.

Not saying rotj was easy, just saying it was a bit simpler.

Anyway the movie was fine, as some people comment some actors were not even necessary in it. In any case, is still better than episodes 1-3 anyday