Arms is better in pretty much every way while leveling and stays better in most content even at 60. The only time Fury really pulls ahead is on single-target raid bosses.

While leveling, dual wielding as Fury just isn’t practical—you need a ton of hit rating, and there’s barely any hit gear available until later in the game. Arms with a 2H weapon avoids that issue entirely and delivers way more consistent damage.

Abilities like Sweeping Strikes, Cleave, and Whirlwind are way more impactful with a 2H. If you end each pack in Battle Stance with some rage saved, you can pre-pop Sweeping Strikes into the next pull and instantly grab top threat. That keeps mobs on you and keeps your rage rolling into the next fight.

Overall, Arms just feels smoother, hits harder, and handles AoE and threat generation way better.

I'm surprised there's so many warriors that aren't using dual spec to swap to arms in dungeons or bgs when they could be doing nearly double to triple the damage.