All the certificates say "WORLD RECORD", and that has to be worth something to somebody.
I think I remember an estimate of 200+ years to fill all the classes. Part of the problem that you don't mention is that slow bikes in fast classes while they take more time, the need love too because they pay as good as the fast ones, but are easier to manage.
If you don't know anything else about conditions, just look at who didn't run and how well the others did.
A measure of the success will always be T-shirt sales.
Does any of that surprize you ?