the test tells you nothing --except for comparative rpm data - under a static condition.
It is of little value in determining how various models will fly -
the reason?
each model has it's best flying speeds--
a given prop may OR may not be most efficient in that speed range.
Each engine design works best at a particular rpm - - change the muffler - you may change that efficiency range.

Probably the most useless info available to modelers as it supposes that it has data close to real world use.
So unless you use the thrust test --to find which prop pulls best at ZERO airspeed -- you learn little from it.

For what it is worth - the largest diameter and least pitch - will produce most thrust --at zero airspeed.
this setup is also - typically-- no good for flight performance.