Yup. There is a correlation. If she has a nice ass, the chances of her having a nice rack is really good. If she has a nice rack, the chances of her having a nice ass is a crapshoot.
You know, I never put it together but you're right. I can't count the number of times I've seen a chick with a great rack but have these bird legs and flat asses. When a chick has a nice, round, firm, tight, ass that you can bounce quarters off of then chances are they have a great all around bod.
The wisdom I gain for this site has made me a such a better person living a much more fulfilled life.