It really doesn't make sense for Jean to be anywhere near the front in this poll given the showings of other candidates like Shadow King, Xavier, Emma, Legion, X-Man, Cassandra Nova, and Exodus. I think people are either using Phoenix Force feats to boost Jean's position in this ranking, or they are simply voting their favorite character. In other words, the results could only reflect who'd win in a popularity contest on the CBR boards between the listed telepaths.