Battle of two of the top 3 contenders for claymore dps builds.
No buffs whatsoever, just raw sword dps. well, geo resonance too but i always have that anyway...
Sometimes the rarity doesn't tell the whole story.
I mean, the Skyward Pride is still better due to its utility aspects and the fact you don't lose damage if you get hit, but for raw DPS on peak conditions the Serpent Spine is stronger. Once the 8 blades from casting the ult with skyward are gone, the DPS drops below what a spine does (same damage, way worse crit rate). At least in my build (72.8% crit rate with spine, 48% or something with skyward, both with 138% crit damage)
Both swords are lv.80 with no refinements.