The Nano is going to need more oil, the Marvel will be able to be used over a wider variety of shots (although I can get away with using my Nano on some slightly lighter shots it is just way too much ball). On heavy oil the Nano is going to be stronger down lane, the Marvel is a strong ball, but will be smoother than the Nano. In general terms the Nano is a heavy oil ball, the Marvel is a Medium/Heavy oil ball.