From the link that you posted:
"Notes:
This novel armoured wolf is the reward for the achievements Ahead of the Curve: Garrosh Hellscream (10 Player) and Ahead of the Curve: Garrosh Hellscream (25 Player).
To complete this, you must have defeated Garrosh Hellscream in Normal mode prior to the release of the next tier of content."
So no.
Hell, even looking up the mount on Wowhead would have given you the same answer.
A shame - wanted it
Yeah, as they said this is a reward for Normal Garrosh. It might be worth it to mention you need to kill him before the next expac to get it though and that everyone present during the kill gets one, there is no need to roll.
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Oh, you know how end of expac raids are, before long Blizzard will slap Garrosh with a ginormous 25% buff or more and everyone will be able to roflstomp him on normal. Just keep playing and before you notice it you'll be able to PUG a normal kill on him
No and frankly I find it a little stupid Alliance have access to it as well. Why do Alliance have access to Horde RBG mount but we can't get that awesome horse?
It would be dark inside my head...if not for the fires...
Well, it's not really the RBG wolf, it's very different really and we Horde can get a bunch different horses too, the one we get in the Argent Crusade Tournament is pretty cool.
http://www.warcraftmounts.com/mounts/argentwarhorse.php
Updating my signature from my WoD characters.
Yikes.
Probably better than you, probably also a casual these days. Go on, keep being elitist.