Remember the power lever just controls the amount of fuel going into the engine nothing more.... (Ignoring beta and reverse of course)
Actually, it controls the target Ng speed. The fuel control unit then varies the fuel flow so as to keep the engine "on speed".
One of the best questions you can ask a newcomer to turboprops is:
"What does the power lever do?"
Sounds simple, but when you do, you tend to get a range of answers back - none correct.
It does not control fuel flow. It does not control power. It does not control torque.
I once heard a pilot describe the power levers as "the torque levers"(!). I was stunned. Seems he had noticed that, when you moved them, the torque changed.
Well, so had the ITT and Ng!
The levers that would have most claim to a description like "torque levers" would in fact be the prop RPM controls.