not really, hunter is one of the classes that get less benefit from haste because all our shots are instant cast and the only one with casting bar is steady shot. it benefit caster classes more for sure. dunno whats ur gm smoking, but no way stacking haste is better than stacking agi.
where did u parse this btw? if it's like lolnaxx25, there's a REMOTE POSSIBILITY that haste maybe better if you're @ulduar gear w/ 25man buffs. but on ulduar or higher, no way.
my gear is far from perfect, but this is roughly what a non-ArP stacking hunter gemming/enchant look like.
The World of Warcraft Armory