Its a simple question really
I have 50 smithing and perks to and including orcish smithing
I have a dwarven warhammer and an orcish warhammer

All damage numbers are of course relative to my skill and other gear

When i improve both warhammers, the dwarven one ends on 47 damage while the orcish ends on 45.

This doesmt make sense to me - shouldnt orc always be better than dwarven?