I beg to differ.
I think comparing POP, IJ, and HP has the same result as comparing Starwars with the Cartoon themes: it is unfair.
POP, IJ, POTC and HP are all playset based themes, with very few exceptions.
Starwars on the other hand is a vehicle based theme with a few playsets.
So if we compare a playset of each theme:
POP:Battle of Alamut
IJ:Temple of the Crystal Skull
POTC:White Cap Bay
HP:Hogwarts Castle
SW:The Battle of Endor
I say Starwars makes better playsets then some of the others. And their vehicles are much more thought-out I think.