How accurate is Simulation Craft these days? According to SC I should be doing 275,000 DPS in my current armor with Bone Chilling. I then was curious about how I would sim with Ray of Frost. According to SC I should be doing 269,000 with Ray of Frost. (Assuming I played the spec perfectly) So obviously if I was to follow SC, I would pick Bone Chilling. However, in actual practice I am seeing a MASSIVE difference between the two talents. Bone Chilling over 5 minute test on dummy is giving me an ending DPS of about 215,000. Doing the same test with Ray of Frost, it's giving me an ending DPS of about 265,000 DPS. Maybe I just don't fully understand how Simulation Craft works.
(Bursting in the 900,000 with hero/icy veins/Ray of Frost is fun. =D)