My battlemage with lvl 5 man-at-arms without any points in two-handed did around 400 damage per normal attack at late game. With rage+oathofdesecration+powerstance+flurry he pretty much one-hits anything lol

Anyway your damage outpit is based primarily on your weapon not your stats I found. Your own forged blades will also do more damage generally than the loot you pick up (but they have less magical abilities)