You can dump 4 of those in a CS. You can only dump 3 RBs.
If you manage to time it right to get 4 autos, and all of them hit and crit, and you get 3-4 HS crits, then yeah, fury burst is way ahead.
Too much risk for the difference IMO. Don't get me wrong, I like fury more than arms and as soon as I'm done gearing I will get a 2nd 2h and give it a try... But right now that's my opinion.
My numbers are w.o Avatar. But I do not recall ever getting a Slam to hit higher than ~130k. W.O CDs it would usually hit for 70kish I believe. I also didn't properly test everything in a controlled environment, though. So my numbers may very well be off.
But I mean, with what I saw, doing around 240k in one global with RB+HS is almost double of what Arms would realistically be doing in the same GCD. I'm not really interested in taking DW/Autos/Arms mastery into account(fury would always come out on top). With the damage you could always do in a single GCD, or even 2-3, Fury's damage WILL be higher.
And I mean, as long as you have proper CD usage, you will more than likely get a CD after ~2-3 Slams/RB combos...
I'm not really trying to make Fury look good. Or Arms look bad. I am just simply posting what I have personally seen/tested. Fury is, umm, not what most warriors are use to. And having to manage the MS debuff is kind of annoying.
Buuut, I dunno. It would be kind of fun if it ended up being viable. But if it is viable, ppl will prob QQ....as what would make it viable is broken burst(not just in CD usage).