Maybe it's the "for pay" element that changes things?
I've seen Samba dancers and belly dancers, with my children, and I thought they were beautiful. But, I've only seen them in the context of summer festivals, and they weren't being paid to dance. They were dancing for us because they were our friends, and the music was good, and they had a skill they wanted to share. People watched and admired and cheered, but they weren't ogling or cat-calling or being... lustful, I guess is the word. Anyone can perform, and other folks recite poetry or play instruments or sing, whatever their skill happens to be.
My daughter thought she was watching a fairy dance.
Of course, given the presence of children, there are probably dance moves they didn't perform.
So, I think it must be context more than anything. I saw Britney Spears on TV awhile back and thought what I was watching was FAR more ponographic than the nearly naked girl who danced at the festival last summer (she'd made up this fantasy dancing girl costume that basically consisted of a single strand of beads and not much else, lol!).