Back to the original question (and I'm not at all discounting what Red Head said), that question is do they make better or worse students. From the several I've seen, a fullscale pilot who chooses to seek assistance makes a great student. I think the consensus is that many fullscale pilots do not choose to seek assistance, and fare no better than others of that inclination.

I have also had three students who were returning to the hobby after some time absent, and they were all great to work with.

Best wishes,
Dave Olson