I call bullshit on the attendance estimates.
Bix, any pics of the audience?
From what I've seen, when attendance is good, those in attendance will snap lots of pics of the crowd to show what a success it was. On the other hand, when there are 17 people in the crowd, everyone always forgets to snap one. If there were 5000+ people at this bodybuilding show, it's one of the stories of the year, and a pic or two would certainly legitimize this claim.