Victor Conte is a convicted PED pusher. Under WADA's code any association with him is a anti-doping violation meaning no boxers or any athletes can hire him.
With Vada they have no such provisions so any boxer can hire him, its why he pushes so hard for Vada its to ensure he can stay employable to these athletes. Nobody else uses vada except for boxing.
Conte Cilent list
Caleb Plant
Mikey Garcia
Devin Haney
Casey Morton
Boo Boo Andrade
Nicola Adams
Jean Pascal
Danny Jacobs
Shawn Porter
Andre Berto
Josesito Lopez
Willie Monroe jr
Bruno Esclante
Ivan Redkach
Julion JROCK williams
Stan Martyunoik
Vanes Martiroysan
Andy Vences
Erik De Leon
Mario Barrios
and theirs more....
Its all just for Job Security.