100% with mommal. I had an oversupply and my son was chubby to the point where he had rolls covering rolls that were covering yet more rolls around his neck, arms, and legs. There is no doubt in my mind that he was getting plenty of "creamy goodness" even though he didn't usually "empty" the breast.
I recall reading somewhere that the thinner milk at the beginning of the feed also has the highest concentration of immunological elements. I can't source that right now, so I don't know how reliable that info is. Someone please correct me if I'm wrong.