Still would be too close to call. Nitrous cars even with a full bottle will fall off slightly on the long end and a S/C car doesn't take long to get into the boost. Boost is basically a factor of RPM (spinning the blower) and load so once you get traction off the line you are in the boost and most Mustangs continue to build power past their rev limit so they never really fall off.
If you are looking for that clear cut answer it really won't happen because the nitrous car won't always win and neither will the S/C car. Really what it comes down to is pay me now (supercharger) or pay me later (bottle fills for nitrous).
Bill