I'm not 100% sure if its accurate, but you can see the tendencies.
It's the SimC-BiSgear and I'm not sure if it's really "BiS".
The heart of Ignacious seems to be pretty good compared to the others, I tested the non-heroversion for a while at cho'gall and came to the conclusion that it takes below 3 secs to stack it to 5. In addition you can stack it while the hastebuff is active ( not like the heal version ).
According to this mastery is more valueable than crit but not as good as haste.
Thank you for your information on item values, it was helpful but I have a question. Is there a way to get the value of spell power from your SimC? As it is another stat altogether.