The old DC motor had a peak power of 10.7W achieved at 89 rpm and 11.72 kg-cm = 163 oz-in.
The new DC motor has a peak power of around 18W achieved at around 75 rpm and around 2.4 Newton-m = 340 oz-in.
If this is true, the new motor is a LOT more powerful! I'm surprised this hasn't been advertised more!
You can compare the datasheets here:
http://cheer4ftc.blogspot.com/p/motors.html