Sylvanas got it personal? Incredible! Think if that was her own ruled city what she would have done.
Thrall had to get it personal because it was a MASSIVE betrayal occurred right within the faction he commanded, he and Sylvanas had to take responsibility on that, even more Sylvanas since the betrayal in question occurred right within her ranks, which caused tons of damage on the Horde as a whole and relations with the Alliance.
This doesn't change in the slightest the simple fact that in war campaigns identical to the one occurred in WoD (isn't that what you dragged in?) Thrall shown his face only as "guest".
Lol maybe we didn't get each other's point then, I thought you pretended that Garrosh blocked Thrall's powers "by his own", where I pointed out the Dark Shaman work merely to say that Garrosh abused plenty of external help to deal with Thrall. It didn't have to do with Vol'jin specifically.And garrosh blocked SHAMANISTIC powers. That means it was vol'jins chance to shine.
About Vol'jin instead, Garrosh was no match for anyone if he roflstomped, with or without the "elements", Thrall in like what? 2 seconds? I mean, we were talking about actual 1v1, under fair circumstances. The striking difference between the clash in SoO and the fight in Nagrand says in a pretty obvious manner that Xal'atoh gave to Garrosh a very substantial boost that wouldn't be really accepted in a duel or Mak'gora, if you ask me.