Isn't that enough?

I would say there is a very high possibilty of all of those getting in, especially as many of the possibles have tragically died.

He may yet fight a few more as well.

It's not impossible that if Ortiz went on to do great things after losing, and he fights and beats Manny that he may end up with wins in double figures over Hall of Fame fighters, especially if Castill gets in and you count him twice.