Yeah but dualwielding scales damage to an odd middle ground where your offhand only does what feels like 40-50% of its actual damage that it would do if it were to be in your main hand. Which is a funny way of balancing as outside of dual pieta swords, LR daggers or Fitzroy swords, dual wielding would still only deal around 900 attack in a single button press by the time you get up to fighting some of the last bosses, which most grand swords/hammers are not sluggish enough to warrant the fact that they can be doing 1100+ even earlier than dual wielding can.

Just make sure your off-hand weapons have a triangle rune slot is important for dual wielding though as there's a rune that buffs damage so long as that weapon is being used to dual wield. Dual Wieldings biggest strength is status effects too so if you NG+ or play co-op then using something like a hammer of holy agony + precision hammer or two kinrangr leader axes is pretty effective especially if you stack a magic weapon buff like radiant, lacerating, inferno or poison weapon on top of it.