The eTorque electric motor does NOT add to the engine's maximum torque number, it only gives a small amount of torque boost at very low RPMs. As soon as the gas engine's torque output matches the 130 lbf*ft of the eTorque, the eTorque switches from being a motor and supplying torque to the crank, to being an alternator again and absorbing torque from the gas engine so it can generate electricity. If I remember correctly, by the time the gas engine gets up to maybe 1000 RPM at the most, the eTorque motor cuts out. So the 0-60 MPH times for eTorque and non-eTorque trucks will effectively be the same.
All eTorque was really designed to do is (a) save some fuel in stop-and-go driving via the stop/start capability, (b) keep the air-conditioning compressor running for brief periods when the gas engine turns off at stoplights, (c) smooth out the automatic transmission shifts. The fact that it can supply a very small, very brief pulse of torque imparted to the truck while the gas engine is restarting, is just a wee bit of a bonus, not really the intent of the device.
The best advice I can give regarding eTorque is this: Just leave stop/start turned on and ignore it. Pretend it doesn't exist, and let it do it's job in the background. That was Ram's intent, i.e. eTorque is a "silent partner" that saves a bit of fuel and smooths out transmission shifts - nothing more, nothing less. Don't over-think this.