Board Thread:Lore Discussion/@comment-108.243.170.212-20140223152728/@comment-24075086-20151024015348

Well back when ES games still had attributes in addition to skill points, Nords always got higher strength stat boosts than Orcs did. It doesn't get more factual than actual numbers so to answer your question Nords are naturally stronger. But it can be argued that due to the Orcs' brutal lifestyle most weak orcs are killed off quickly so Orcs are on average stronger.