To start with, that poll data is as skewed as any poll data from a CBR poll. It doesn’t represent the will of the audience as a whole, merely that of a relatively small number of CBR board readers.
Even there, it doesn’t measure 7000 people, it measures 7000 responses. All you need is one dedicated fan with enough free time and a burning desire for a Kitty Pryde or Polaris book to vote again and again to skew your data.
So I don’t really make anything more of this than that it’s anecdotal.