I have kept my War for high level dungeons since getting it to 60 so I might just not remember the way it was.
Since the SB launch, I always go do my daily roulettes with my FC buddies and I had lots of trouble keeping the aggro on mobs in low level dungeons (i.e. without stance)
I would overpower twice, switch to 1-2 combo for slash debuff then keep going. But I can see the DPS's aggro meter rising with each GCD and spamming my aggro combo barely keeps up.
I should mention this happens mostly with RDM.
Did War get a nerf in aggro generation or did I just forget to tank without tank stance?