all 3 Warrior speccs are good for leveling … but has different playstyles… (like Tymx said)
Arms: big pull… warbreaker -> bladestorm -> finish with SS+executes (healing via Second wind = no downtime) … maybe a small pull in between for CD recovery.
Fury: 2-5 target pulls … standart rotation… no downtimes…
Tank: depending on targets (if pos. 5stacks into fray) medium to big pulls with sustained aoe + VR sniping or dungeon grind on low levels because instant invites…