I'm not sure that says anything at all about centers, or the fact that zone D has impacted them greatly.
I get what you're saying about "great centers", but I think the fact that we can look back over a 50 year period and pull out a dozen doesn't mean that it was any better then. We're cramming a mighty big sample size into a few sentences...
http://with-malice.com/ - The half-crazed ramblings of a Lakers fanatic in Japan