Interesting thread... I think it's obvious that however cheesy their dialogue may have been, Han and Leia had much, much, MUCH more chemistry than Anakin & Padme. It's almost laughable to compare the two relationships. Han and Leia were interesting and there was real, palpable sexual tension between the two... at least, in ANH & ESB. Han and Leia kind of fizzled out in ROTJ and they became boring.
Anyway, going back to Anakin and Padme... Their chemistry was so lifeless that I couldn't even bring myself to get through their scenes together without gritting my teeth. Again, Han and Leia were adults with a real tension between them... Anakin and Padme seemed like teenage siblings. LOL! Heck, Padme had more chemistry with Obi-Wan than she did Anakin, which is kind of hilarious.