Greg Guarino wrote in news:m2rcsg$o33$1@dont-
email.me:

I have no experience, but I think I can give a reason (Physics). I think
the closer the runners are to the height of the handles, the more likely
the drawer will pull straight out, as opposed to tilting forward or back
and jamming in the slots.

Well, that certainly does make sense. I was thinking that all
the examples I could think of of that style had the runner
pretty much centered, but couldn't think of any reason I'd
ever heard for doing it that way. But I think you have it.

John