Now, to put the arguing aside for a bit. Episode I and EPisode IV. Both skywalkers blow up deathstar/droid control ship. The main point of both movies was to just meet the characters who will be in the next two films of the OT and PT.

Episodes II and V, Both movies put the rebels/republic in a dark time. Only difference is u may notice it a little more in AOTC. Both contain love stories. Han and Leia/Anakin and Padme. Only difference is the acting. In both involves a jedi going on their own mission. Luke to daghobah and obi-wan to a series of planets to find the bounty hunter and eventually seperatists. Both skywalkers lost their limbs and end up getting robotic ones.

Episodes III and VI. Both movies have a title that is the same only worded differently. ROTJ was the original name for Episode VI, hence ROTS. In both the jedi/sith rise again. the ends though opposite had a similiar meaning. The sith rise/the jedi return.

i'm sure there's more we can contribute here.