Gilera Runner Shootout - Malossi 172 v Standard 180 - PM Tuning Exhaust

We put two Gilera runner mopeds with very similar modifications on the dyno to see witch has more horsepower. The only real difference is one is a standard 180cc and the other has a Malossi 172cc top end.
Both have PM Tuning exhausts, bigger carbs, clutch and variator upgrades
who's going to have more HP?