Easy explanation:
-The show is well recieved by many. I would say Bronies were included in the FIM search result

-However, obviously we would as bronies say good things about the fandom. So instead, the poll went to non-bronies, who generally have negative feelings towards us. Even bronies would say negative things about R34 and the like regarding the fandom. That statisctcally brings us down in poll results.

@Seer of the Bronies

you sure? i've seen a lot of bronies acting like jerks,like FORCING TO WATCH and stuff.

but…i've a lot of good bronies too, that tries to explain the fandom and all of their work, like charity…

… however,people react more on negativity than positivity…..

ok..in a nutshell, its more easy to bash than enjoy