Not really. Didn't he do the Skyrim music? I liked the music in that, but GW2 just sounds generic fantasy and unmemorable to me for the most part. I probably couldn't hum you a single tune and I've been playing with the music on for over a year. (Completely the opposite for WoW and I haven't played it in going on 4 years.)
I usually love game music too. I have a collection of soundtracks from various games (Okami, Suikoden, Quest for Glory, WoW :P, etc.), but GW2's just does nothing for me.