bb's proration system is pretty convoluted. first hit uses both p1 and p2 values, every hit afterwards uses just p2, rather than p1 just being for the first hit and p2 just being for the second onwards. this is why things like hazama jayoku as first hit > combo will do less damage than 2a > jayoku > combo, lol. hit up the wiki for a more detailed answer 3 FAST 5 ME