Oddly enough, I had been planning on asking this same question [I've seen both the girls mentioned, and was wondering if there were any others]. Lucy's are bigger than Leah's because Lucy is a larger girl. I'd call Lucy a small BBW, while I'd categorize Leah as being at the large end of "normal" for an Asian girl, which translates to right-down-the-middle normal if she was American. If you're concerned about things other than boobs, you'll have to take into consideration the circumstances under which each of these ladies works [you'll get WAY more extras from Lucy at a lower price but don't expect a professional massage either]. I'll post my review of Leah soon [the world does not currently need another Lucy review!]