I don't think Gianna's boobs are the best; I think everyone voting for her is voting because she is (was I guess since she's retired) probably the best all-around pornstar in the last 5 years...taking EVERYTHING into account. The "intangibles" are getting her the easy win. She'd also easily win if this was a best tittyfucker poll between these 3...
I think Lil' Chica has museum quality boobs--they really are amazing to look at.