User blog comment:Hinansho/What do you think the currently unknown epithets mean?/@comment-9096222-20131123231706/@comment-11051098-20131125085110

If it was to be the same ability, Yhwach would probably have to give Uryû that power. Royd and Loyd were twins and would logically (most likely) naturally develop the same ability, or related abilities.

I think it's different abilities, but it won't likely be revealed for yet some time.