A good link Dave, I think that their first sentence says it all -
"A supercritical wing is a kind of wing designed to increase aircraft performance within the transonic speed range."
It just so happens that the supercritical wing came along in the computer design era. Being computer designed doesn't make it supercritical! If so, I guess that computer designed fuselages etc. are also supercritical.
Regards,
Old Smokey