I actually agree on the iffy part, its just a better metric then what else is available. for example, while the BL polls might be a decent representation of the english fans, type moon wont really care about our opinions as we are not the people they are interested in. the best case scenario would be a route popularity poll done by type moon since we could be assured they would have sampled their target audience.
lacking that, I move to the popularity poll since it was still done by type moon.