What I meant is that static thrust alone is not enough to predict how the plane will fly and even whether or not it will fly at all, since you also have to take into account the pitch speed, which has to be higher than the stall speed.
However, a too much prop pitch speed in relation to diameter makes the prop inefficient at low airspeeds (e.g. during take-off).
That’s why the full scale airplanes often have the facility to change their prop pitch to suit the actual airspeed (like changing a car gear).
Do you see a flaw in that approach?
Yes, because as you start increasing the pitch it may start showing you a bad static thrust due to the prop stall at the static condition, which may not happen in flight at the same rpm, that's why it can be misleading.
So, a prop that gives you a bad static thrust on the test stand, may
in the air outperform others that give you a better static thrust.
Static thrust alone is only useful if you want the model being able to hover (like a helicopter).