I can't agree with you on this point. Having worked with hundreds of interns from several different programs, I can say with relative certainty that not all programs create the same level of quality. It's certainly not 100% predictable in that some of the programs that tend to produce lower quality interns will on occasion, produce a very good one. Other programs that tend to put out higher caliber interns will sometimes send out a total train wreck.
This is one of the problems facing optometry today that is certainly only going to get worse. We have "standards" that are pathetically low. The NBEO clinical portion is ridiculously lenient and every year, dozens and dozens of clinicians who have no business seeing patients are being let through the gates and released on the public because they demonstrated "minimum competency." Examples? In several years of working as a clinical preceptor in an extramural site that rotated interns from a few programs, I had the opportunity to work with clinicians who are absolutely not qualified to see patients. I had a 4th year intern in her LAST rotation who was in the habit of instilling a steady stream of DPAs when she was dilating a patient. I asked her "Where on earth did you learn to instill drops like that?" She told me, "Uhhhh....I don't know, I just have always done it like that and no one ever told me it was wrong." I've had 4th year students who could not view retinal periphery on a fully dilated patient. I've had 4th year interns who were absolutely incapable of using a 3 or 4 mirror, let alone interpret what they were looking at.
All I'm saying is, when you say that "you get the same training no matter where you go..." that's not the case. Different programs have different emphases and some work you harder and smarter than others. If you go to a program with a history of producing substandard interns, you'll have to work extra hard to come out with skills that will not expose you as such.