The poll isn't whack. Last year they did the same thing, and guess what? webOS was very well represented (I can't remember if it won or not, but it definitely made it to the finals).
The webOS crowd is very enthusiastic. I think they have a good reason to be. It's an excellent OS. If it gets to the point of being anywhere near as popular as Android or iOS then we'll start calling them the new iOS group cuz they will claim that everything done on webOS is the "right" way (and you could argue that a lot of it IS the right way).
Yes, I voted (Thunderbolt) and I didn't expect to see the results because Thunderbolt owners are very enthusiastic people. But after about 5 minutes it made sense. webOS users have nothing better to do than look for polls to promote webOS.
(yeah, I had to go there)