feedback on the new surv spec with improved stings\t9 2 piece bonus

it is worthless. yup. it was a waste of an hour work and gold used to respec
in the hunter raiding guide on wow forums, there is this spec
http://www.wowhead.com/?talent#cbZ0eVoohZx0ci0cIhgdqhsz
it utilizes the t9 2-piece bonus (SS crit)
it takes some points off hunting party and other mana-related talents such as hutning party and use it in improved stings.

in my old spec which is
http://ptr.wowhead.com/?talent#cZ0eVoZx0ci0cIhedAhsu
i did 3.7k dps on the boss training dummy. it was buffless though. not even the aspect.

with the new improved stings spec, i did 3.4k, buffless again
it even nerfed ny stats. have a look
left hand side stats is my old spec. the one of the right is the new spec stats




anyway.. what do fellow hunters think? feel free to try it out and post your results

[EDIT] forgot to add that the new spec is -obviously- inefficient mana wise. it is terrible. you will need to stack spirit :p
Also, the "old" spec I was using isnt accurate the one linked is 0\15\57. the one i used to use is 0\15\56. take 1 point off hunting party and use it for aimed shot.

if you do less damage and it is less mana efficient; I would say go back to what did the most dps :b