In both WoW and TOR - if you want to do the same kind of content that you do in GW2 - there's no gear grinding. You can roam around, complete all the quests, gather all the stuff, kill world bosses, do your storyline (TOR only, of course) and do 5-mans without hunting for any more gear than you'd pick up while leveling or with a small amount of purchasing.This was the same for TOR and Tera. And to a degree, TSW. It was true in WOW during the time I played it as well. If Blizzard changed something then I admit ignorance of the current World of Warcraft structure.
Hell, in TOR my guild started clearing Nightmare mode raids in PvP when we were in PvP gear and the gear that quests gave us. In Cataclysm in WoW, you could do all the normal modes half naked, and while heroics did have an item level requirement, that requirement was so low that it barely mattered. It was no more limiting than buying a set of level 80 greens off the TP in GW2. When my guild was working on Tier 11 heroics, I was still in mostly blues. (I didn't get rid of my last blues until after Sinestra went down, and I still had a level 80 crafted trinket all the way into Firelands, heh.)
Gear in most MMO's doesn't matter nearly as much as people seem to believe. People in "traditional MMO's" just see stats make up for poor play in most cases, and then assume that gear was the limiting factor. It's why you're already starting to see, "LFM Exp. modes, full Exotics only." in Lion's Arch map chat.