I played against Orcs a lot and honestly, the regular Orcs are more deadly, even the arrow boys. It only needs one flanking unit of cavalry, or ranged unti with rend 1, or whatever just to take the savage arrow boys out. Meanwhile with the regular arrow boys can have bows for decent ranged support of Ironjawz, and additionally choppas and shields for their melee potential and their failed save re-roll. Additionally you need to have at least rend -2 to ignore their save, unlike -1 with the savage arrow boys, which tbh A LOT of units have. I play Empire for example. Technically I could move up my troops with handgunners in the back and shoot at you, each handgun having -1 rend, same with the repeater handgun and the longrifle even has -2m since you need to be close enough for me to shoot at you, just so you can shoot at me as well. Plus give them a Warboss with the Waagh ability and nobody will want to go into melee without a plan against them!