The comment you're replying to is comparing Arms (not TG) to SMF. Read more carefully before posting.
Also, the simulationcraft BiS profiles put both Arms and TG above SMF for a patchwerk style fight. Gurthalak is a very good weapon, this is well documented and understood.
Originally Posted by Jeremy
403 Gurth in Arms is going to outperform H Morch/N Morch SMF in almost any scenario, as would 403 Gurth/Any modern-ish 2h as Titan's Grip.
What data is this based off of? Note, I'm speaking to the comment about TG>SMF. SMF represents a very small portion of Fury players, and looking at logs, Reptile has been posting very high end numbers compared to his TG counterparts. I was even able to rank well as SMF Fury on a few fights, 59 H Ultra/9 N Ultra with no Heroic gear. Reptiel had the top overall parse as SMF for Hagara, and Collision has had very high rankings as well for some of his heroic kills. From what I've ascertained from logs and experience, the gap between SMF and TG is gone, yet many warriors cling the notion that TG>SMF. What I'd like to see are the facts and evidence to back this up.