I spent a few hours on my guardian in WvW tonight. She has a level 68 masterwork backpiece, to give you an idea of her gear (exotic clerics armor from game launch that I thought would be useful.)
My goodness, I had forgotten how easy the other professions have it. Oh I do just fine on my ranger, but my fingers play the keyboard like a piano to keep me alive. Take my crap guardian into WvW, spam 1, never a chance in hell I’m going to die, kill everything. I spent several gold on bigger bags to hold all the crap that was dropping.
Gah. 
Edit: Relevant video if you haven’t already seen it. “When I’m Guardian”.
https://www.youtube.com/watch?v=U0fxuoJGdGs
(edited by Fluffball.8307)