Evil Genius

^^ might be correct, How long was the second Gatts vs Griffith duel way back then. it only took 1 swing

lol - but..... kiling Casca makes for killing Femto all the easier! So in order to achieve his revenge, killing Casca would allow him totally focus on Griffith - in fact, there wouldn't be anything to hold him back! Gutts wouldnt do that, that was establilshed when griffith was reborn with his baby...