I would take an unprepared CU defense every time to shut down a CSU option attack being run for the first time ever. You don't just simply install a completely new offense and seemlessly execute it to perfection in game one.
My premise is that you wouldn't have to seemlessly execute it to perfection to hang in there. My premise is that CU can be confused. If CU blows CSU out, I'll get on Allbuffs and go all Mea Culpa. Still think its a coin toss….