Personally, I'm fine with the wording either way. I'm just here to drop in the facts requested.
Similar to Bioblaster (PvP):
MNK - Demolish (PvP)
Combo Bonus: Increases damage you deal target by 20%
DRG - Chaos Thrust (PvP)
Combo Bonus: Increases damage you deal target by 20%
NIN - Shadow Fang (PvP)
Additional Effect: Increases damage you deal target by 20%
SAM - Yukikaze (PvP)
Combo Bonus: Increases damage you deal target by 20%
Dissimilar to Bioblaster (PvP):
Caster Additional Action - Phantom Dart (PvP)
Additional Effect: Increases damage you deal to target by 10%
Consistency favors Bioblaster's current wording, though it is odd that there is a single example that includes "to". I was surprised when I found it.
Disclaimer: This information was pulled from the job action list on the lodestone website. I haven't personally checked to see if the in-game strings match.
