Bodybuilder Richard Baldwin from Ironage.us had this to say:
Absolutely! Bill announced he was challenging all the greats a year ahead of time! He didn't sneak in at the last minute. He beat Frank Zane, Sergio Oliva, Reg Park, Boyer Coe, and a host of others. Weider was so afraid of Pearl he didn't let Arnold enter!
I might have said Arnold, but he didn't look as good as his last contest and so many people who saw the contest thought he shouldn't have won. Ditto with Franco's win (an even more questionable win from witnesses I've heard talk about it). Yet, from the photos I've seen, I wouldn't question either win as fixed. I think I would have had to be there to speak with any authority on the subject.