The only thing that the larger fulcrum will do is make it so that you have to push the pedal farther to get the same amount of TPS travel. The TPS will get the correct information because it does not care where the gas pedal is, it only cares where the throttle butterfly is. No math involved.
What might end up happening is that the butterfly does not open all of the way. The only way to know that is to install it and see what travel you get.
