The Caltech argument in this argument doesn't take into account that Caltech is a very small school. They enroll around 200 new undergrad students a year which is about 1/10 the number most Ivy league schools admit. I think this is the primary factor why you don't see many big name Caltech grads, there aren't as many of them. Especially when you are comparing Caltech to ALL Ivy league schools grouped together.