While I agree the OP hasn't provided "proof", I still agree that hunters are favored in PvP because they are stronger then the other two classes in the crucible. If you think it's a coincidence the majority of the top 100 play a hunter then you are ignorant. I have spent some time looking at these players stats on DTR and most play all 3 classes, but their KDR is much lower on the other two classes. Players with a 3+KDR on their hunter often have barely a 2 KDR on other classes. This shows that yes, other classes are still viable, but not nearly as strong as hunters.