Yeah amongst other things:
There is no evidence to suggest he was in the military or a high level CIA operative
There is no evidence to suggest he has ever competed in martial arts at any level
He claims to have broken bullet proof glass bare handed
His one and only trophy for 5 years of undefeated full contact combat was purchased near his home
He claimed Bolo Yeungs character died right before the film was made from brain tumours
The man is a serial bullshit artist, would likely be man handled by an average fighter.