I mean, it wouldn't surprise me just reading the description of the WS. It is a 2 hit, RR and KJ are 3 hit.... that just about settles it. On multi hit ws, SE don't usually make the ftp of the first hit that much higher or lower than 1.0, so it would be really hard to make up for that 50% more hit with modifier etc. And I call that randomly double the damage BS, doesn't he own the gimp version? I see nowhere on the description about double damage.
XI Wiki


