Peak current and peak torque tell you nothing about the performance of a servo motor.
If a servo motor runs anywhere near peak for any amount of time it will get hot, melt the brush holders, melt the wiring, and the grease will run out of the bearings. All not good things.
I can certainly attest to the fact that a stalled servo motor at peak torque will go up in smoke in a manner of minutes.
You size a servo motor by it's continuous ratings. This is the power it can tolerate for extended periods of time without damage.
It is possible to use power above the continuous ratings during accel and decel if the duty cycle is low enough. However you will get brush arcing and the motors life will be reduced.
Bob