You make is sound as though it takes more than 30 seconds to see if a game will make gfx usage peak at 100%. Its not like I said I beat a hundred 50 hours games and my CPU never dipped below 100%. Are there times, say during heavy CPU physx, that the card won't maintain 100%, sure.
But off the top of my head, skyrim, l4d, l4d2, wow, crysis, warhead, crysis2, metro, path of exile, borderlands, portal 1 and 2, civ5, killing floor, lineage 2, and god know how many I can't think of right now will all peak at 100%. Some of those games could vsync cap on my 4890 but will still use 100% of my gpu if I turn of vsync.
Either way, I was just asking if what he said was specifically for gw2, because I don't own that game, and that behaviour does not line up with my experiences when gaming across random titles. But thanks for implying that I'm incompetent or a liar.