Judging how good crit is is much harder than something like haste. Haste is pretty much always there and in effect but crit isn't. Crit is like hit and expertise. If your tests are not really long you could see the stat looking like the greatest thing ever or total trash.
Also need to watch your personal bias. Crit is a hell of a lot more fun. Big flashy numbers are way more fun than faster numbers.
Tried both haste and crit heavy reforges on the first 3 bosses in Mogushan Vaults. And its a huge difference with all the raidbuffs scaling up haste like mad. 10% or so damage increase with haste compared to crit.