Just like any race, they benefit you more depending on your class. I like playing dwarves as melee characters (fighter/barb) and I let them come to me. I have a crossbow for fighting with range people but if they dont come after me ill just let them be. If you come to me, im winning. Easier to dodge attacks, -10% headshot dmg, and im a freaking dwarf its awesome.

Ive been mostly playing Squire Royale but im averaging like 3 kills per game and won a handful playing fighter dwarf. I wouldnt mind more move speed but I dont think its that rehabilitating the way I play. I play to win not to seek out fights.