How about utilizing the infamous > sign. You could expand on the 7>5 by saying something like:
The Ralph > The Xcel
(Where's the leather and granite???)
How about using the good old standby that is my signature line:
UND: 7 NCAA Titles
UM-TC, MSU-M, SCSU, BSU, tUMD 5 NCAA Titles
You could insert each of the teams logos on the sign.
Expanding on that, how about using something like this:
The State of Hockey???
University of North Dakota, More NCAA titles than all 5 MN schools combined!
How about dressing up with a swimcap on and a sign saying, "The Robbie Earl UW Dive club" I may have read that on this board a few months ago, if so, great idea from that person!