there are 2 different discussions i think people are overlapping
gear wise, i dont think oss has the best of the best in every slot. sunwell has only been out so long, there is the rest of the raid to gear, and random drops = fail. that being said, he does have top of the line gear available for tankadins, and currently has access to everything in the game, hence why i mentioned his name.
skill wise, i will agree that being in a top guild doesnt mean youre the best. but, exodus has downed kj, and sunwell has a nasty trend of incrasingly relying on every raid member to do their part. with such a small margin for error, i would say its safe to assume that the us horde first kj, and ranked 4th in the world, has overall skilled players, and having raided with a large number of them, id say he, along with the rest of them, knows what hes doing. also, gm and mt kaywarrior doesnt take to well to incompetence, theres a significant difference between a high end guild and a top 5 world ranked guild.
incidentally, i cant see his spec, maybe people should be looking at what talents he chose, instead of the ones he didnt? not trying to say he is the best, but someone asked to see a geared paladin, and his name came to mind. just like having high end gear doesnt make you skilled, having a weird spec doesnt necessarily make you bad. theres an exodus lock who pulls one of the highest dps in the world according to wws, and i know he raids with a funky spec. clearly its working for them, just because you dont agree or it might not be whats accepted as "better" doesnt mean hes not just as, if not more, skilled than the people badmouthing him.