and i suspect holy shock changes will help paladins as well.
Holy Shock changes will do nothing for Paladins, if anything it hurts them more due to costing a lot more mana, which is a huge issue for Paladins.
I wish they'd give Holy Paladins some real changes, every thread I see in the Paladin forums are to do with Retri. Holy seems to be a forgotten spec with no real light at the end of the tunnel because nobody knows how to fix it.
Regarding warriors remember that they are the one of the most popular classes (second only to hunters I think). So while one see lots of warriors on top, as they have high pop, when normalized the representation is not as "excessive".
Warriors are far and away the most popular class. Mages are second most popular. Hunters are a relatively distant third behind those two. This is all at level 70, which is all that counts for Arena…the numbers may be different if you consider all levels, though I believe Warriors are still firmly on top.