Arcane Reforging

So i followed the Ultimate guide to PvE(All Specs) sticky at the top of these forums....i gemmed all intellect...and i reforged like this

Hit>Mastery>Crit>Haste

if it had hit and mastery i left it alone...and i am sitting at about 17% hit rating i do believe

i basically reforged all haste to hit that i could....and if i didnt need anymore i reforged all the rest of the haste to mastery or crit depending on the itemization of gear....

i know the rotation like the back of my hand, so i know thats not the problem when im pulling only 14-16k dps with all the epics i have...and someone who just specc'd to arcane in my guild came in and showed me up with 20k dps in maybe 1 or 2 epics and a lot of 333 gear and some 346 gear....i talked to him today and he was like "haste is still the most optimal stat from what i hear..." Is this true? Is my reforging wrong because the sticky was wrong?

p.s. i know im missing enchants but i didnt think it would be a 6k dps loss for not enchanting...im trying to wait til i get the highest BiS gear i could before i enchant so i dont waste gold on the mats
so i found a new reforge map...so i reforged like this:

Int>Hit to Cap>Mastery>Haste(soft cap)>Crit>More Haste

I maxed on a raiders dummy @ 16k dps....and overall after 3 burn and conserve phases i hit 10k dps

HOORAH!!! On a heroic training dummy...i hit the 22k dps that my friend hit although after a burn, conserve, burn phase i averaged 13.5k dps...and thats with ONLY my arcane buff and without focus magic...i cant wait to own my other dps friends now :D
Correct me if i am wrong, but there is no such thing as a haste soft cap for arcane because we dont have dots.
There is the possibility to hit sub 1 second cast times and running into the global cooldown.
the soft cap i heard was from what someone said above...you can run into the GCD...if you get 1.3'ish cast times and then lust...it will be a sub 1 second cast time at 4 stacks meaning a loss of dps....

this is the reason you get haste to soft cap...then crit becomes more viable...then you get haste that will take you down to 1 sec cast times outside of lust

So i followed the Ultimate guide to PvE(All Specs) sticky at the top of these forums....i gemmed all intellect...and i reforged like this

Hit>Mastery>Crit>Haste

if it had hit and mastery i left it alone...and i am sitting at about 17% hit rating i do believe

i basically reforged all haste to hit that i could....and if i didnt need anymore i reforged all the rest of the haste to mastery or crit depending on the itemization of gear....

i know the rotation like the back of my hand, so i know thats not the problem when im pulling only 14-16k dps with all the epics i have...and someone who just specc'd to arcane in my guild came in and showed me up with 20k dps in maybe 1 or 2 epics and a lot of 333 gear and some 346 gear....i talked to him today and he was like "haste is still the most optimal stat from what i hear..." Is this true? Is my reforging wrong because the sticky was wrong?

p.s. i know im missing enchants but i didnt think it would be a 6k dps loss for not enchanting...im trying to wait til i get the highest BiS gear i could before i enchant so i dont waste gold on the mats

Mastery>crit>haste is for when you have four pieces of T11. The four piece gives you 10% haste on AB so haste becomes less valuable than mastery and crit.
Personally I think the reforging priorities are like this:

Hit(below 17%) > Haste(below soft cap) > Mastery > Haste(above soft cap) > Crit

At least that seems to be how Rawr wants me to reforge.

Haste soft cap is the amount of haste that would make your AB 1.0s with 4 stack of AB, bloodlust, raid haste buff, and set bonus if applicable.

Of course with the 4set bonus you get so much haste that you will get pushed very far over the soft cap which eventually devalues haste so much that crit starts looking better.
Stat weights change constantly as you upgrade and swap out gear. There is no hard and fast correct answer. Using a sim like the one at elitistjerks.com/rawr.php is the only way to be sure of what your own particular reforging priorities are.