Barrera was the man at 126lbs when they fought, So why can't that be considered his 5th. Why not label him a 5 time champion he did beat 5 champions.

Regarding PAC-JMM rivalry regardless on how many rounds JMM won over PAC, the fact remains those 4 knockdowns and countless wobbles that PAC scored vs JMM matters and they did happen to eek out a win on both fights.