Neu 1515 vs 1512

I have a Losi 8T with a Neu 1515 1.5D and a mamba max. This thing has WAY too much power with the punch control turned off. It is raceable with the punch control around 50%. It seems like a waste of motor to have to hold it back like that. Do you guys think a Nue 1512 2D with punch control off will be comprable to the 1515 at 50% punch? Would I get more run time? Will the 1512 overheat?