In response to numerous Pm's and emails I've received..
Apparently, the same guy won the Masters and Overall N.A. championships, here's how it works (as far as I know)
It wouldn't matter if the same guy won 3 "pro cards" in one night....you're not a pro until you win a pro-qualifyer...AND...submit to be accepted as a pro, which entails a letter requesting the IFBB recognize and accept you into the club.