is there someone who actually thinks that Sayaka is the most popular girl in the show?

I can't see how you can claim Sayaka as the most popular if you're not talking about the most popular megucas.

I do have a theory though.

Why do Madoka fans think Sayaka and Kyouko have such high sexual attraction?
It's hard to imagine a girl getting off by only a boy, and it's obvious that Kyouko and Sayaka have a lot in common.