AV machamp is completely outclassed by AV conk imo. Conk has (stronger) priority, more attack, reliable recovery in drain punch, and it's an amazing status absorber that discourages the use of WoW and Toxic. Ofc, champ has guts too, but if you use guts on it, it has no moves to use really. Knock off is good, but without no guard, you don't have any spammable fighting STAB. Close Combat lowers your defenses, which is the last thing you want on an AV user. Really, champ isn't viable at all imo.