Both of them couldn't give me any informations about the ~120V running

So it seems that I have to make my own experiences and curves
The amperage you feed to the motor will be much more important than the voltage of your pack, unless you intend to be running this motor at redline RPM all the time.
72v is about the maximum the motor will likely see during "normal" operation, even with a 120v system.
Voltage and RPM go hand in hand. Unless you're spinning it without a load, or driving on the freeway in 1st gear, I don't think you'll ever see 120v at the motor.
That being said, if the curves you see include amperage comparable to what you expect your controller to output, then you can expect the motor to perform more or less the same as you see in the curves.
You can see this demonstrated in dimitri's thread about his soliton controller. One or more of the graphs shows motor volts and motor amps. Most of the time his motor isn't seeing much more than about 24-36v.