Well, we first need Video proof that they did it, then we can sing the praises
Can't you just check ladders on PTR? I can't start the game for the next few hours, but it should be possible for anyone to see their classes, and unless they've already purposely changed it even their specs and gear as well.
But OP said "watch the final round" so I guess there's a video somewhere... I sure hope so ;-)
Deleted lots of off-topic discussion. Stop being rude to people just because their post is not in perfect English, and most importantly stop derailing threads like that... saw no other way than do remove all those off-topic posts.
On topic: as others have said, this will probably show developers that they need to do something about some of the game's mechanics. It can't be that a few days after release the race has ended and people "beat the game" already. So I'm kind of thankful for all you to push the boundaries now, on PTR, rather than later on live such that Blizzard realizes that they need to react. Skills must not scale with monster HP, otherwise it's pointless to increase their HP at all.