User blog comment:Luffy1999/Top Strongest Characters/@comment-25316424-20130907215822/@comment-8940715-20130909144822

well I wouldn't go as far as to say that killua would obliterate hanzo, remember when wing-san said that everyone who passed the hunter exam (excluding leorio who was at the time studying to be a doctor) has learned if not still learning nen, and he did mention that hanzo already finished his basic nen training, now assuming that without nen hanzo was just a tad bit waeker than hisoka in terms of hand to hand combat, imagine the growth of his strength when he learns using nen.

with that being said, I believe killua is far stronger than he was back then and we can only speculate on how hanzo has grown too in terms of nen fighting abilities so we can't really say who'd win or who's stronger at this time. anyways im really looking forward to see the old characters (hanzo and zushi and ofcourse leorio and kurapika) in action just to see their skill level vis-a-vis gon and killua's