>Are folks really going to argue that the horses using the multiple week spacing >ambush technique in the Belmont during the last 7 years are really being >managed better than those that run in all three triple crown events and are >sounder with more bottom to go on with their careers?

Yes because of these winners.

Jazil
Afleet Alex
Birdstone
Empire Maker
Sarava
Commendable

The Belmont was the biggest victory on their resumes up to that particular point in time. The only exception being perhaps Birdstone who did later win the Travers.