Rawr gives data that made two bloggers (Marino and Tarskin) reach different conclusions based on the same data, this became very clear when i come home semi drunk yesterday and read Marino's latest post where he employed a GCD based excel analysis which can be found here.
The key to his analysis were the threat numbers taken from Rawr for the seperate moves and with those he concluded that iMangle creates more threat then MSS, a conclusion which kept me awake most of the night (sad, yes i know) untill i hit my eureka moment somewhere at 6 AM.
My eureka moment basically was : "How can i use Rawr data and conclude X and he uses Rawr as well and concludes Y?"
To do this i must first say which part of the Rawr data i used, personally i used the Highest TPS Rotation values from Rawr as a support for my idea, this gives the following numbers (based on my toon):
0/55/16 (MSS Build) = 3327 DPS / 7303 TPS
0/60/11 (iMangle Build) = 3286 DPS / 7183 TPS
This means that according to Rawr's Highest TPS Rotation MSS wins out easily, yet these numbers are very different from Marino's. It took me untill 11 AM this morning to find the flaw in his work, his excel sheet does not include Maul hits and Lacerate DOT ticks and i have notified him of this hoping he'll redo the excellent methodical analysis (which he did).
Master shapeshifter is 1.3% better then Improved Mangle for threat, to see the complete math go to Marino's reworked post here.