Lmao this is hilarious. The ignorance of the OP is so astounding, and entertaining.
- Just FYI : A good resource you can use to determine the power of Arms in relation to other specs is the Raidbots.com 'Spec Score' tool, it kind of compares the parses (Actual logged fights, not simDPS) across different classes and specs and shows how they're doing relatively in the current (or previous) tiers.
But seriously, I play Arms because I've always been a big fan of it next to Fury (Crit dependence really irks me), and I can tell you it is especially gimped atm. I'm competing in my current ToT group and I've had a few rankings but the deviation of an Arms ranking from another spec, or Fury, even, is so drastic in most cases that it should be blindingly obvious to you. Sadly, it is not.
*And if OmertaLH up there is the same guy who made the ToT guides for Arms- you should listen to him, he's pro.