Macho Man is much, much, much, much bigger than the Big Show. I'm not sure if you remember how over he was. The Megapowers storyline was HUGE and the WM 5 build was like Austin vs Corporate Rock the first time. Except there were MUCH more pro Rock signs at WM 15 than for Macho at WM 5.
King Propaganda.

There were more signs PERIOD at Mania XV than Mania V.
There were also more signs where fans put their own names on the MF with the arrow pointing to them... so were people named Greg more popular in '99 than '89 too?
Anything to throw your man crush in the mix.
Foley's book came out in 99 or 2000? When the Rock was getting Raw RECORD fukking high ratings against Football and all kind of $hit? WTF...everyone was making easy money back then. Chyna had the highest selling Playboy that year too..everyone was reaping rewards from the Rock and Austin era. Trish, Lita, Big Show, Taker...all of them nyggas. Jericho, Benoit..all of em.