85 Moonkin, Direwulf
posted a bunch of paper doll screen shots. I plug those values into Excel and I get some rating conversions:
Int 2913 -> 6.34% Crit = Conversion: 459.5
Spi 600 -> 541 MP5 = Conversion: 59.9
Haste 787 -> 6.15% = Conversion: 128.0
Hit 541 -> 5.28% = Conversion 102.5
Crit 1035 -> 16.11% = Conversion 64.2
Mastery 543 -> 3.03% = Conversion: 179.2
Spirit -> MP5 assumes the form stays the same MP5 = Spirit*Sqrt(Int)/59.9
I wouldn't be surprised if that 16.11% crit includes base crit and crit-from-int, in which case the conversion should be considerably higher than 64.2. Otherwise, we're looking at crit being only half as expensive as Haste, compared to LK where it is 50% more expensive.
Edit: Haste and Hit conversions are 3.9 times the LK values at 80. Mastery conversion is 3.9 times the LK value for Crit. Perhaps the actual conversion for crit equals the conversion for mastery.