Some WS's also receive less benefit from Raging Strike and Ferocity... this was noticeable since last November.

Riot Blade would be a prime example and the first one I noticed that seemed to have a smaller amount of increased damage when buffed as compared to other WS's. Percent-wise anyways... but since it does so much damage the smaller % actually worked out to be more total damage increase. I didn't read too much into it but I'm sure there's some reason why some WS's just don't reflect the buffs as much as others.

Best to just play archer then you don't gotta worry about buffing WS's! Gogo buffed Multishots....!