RF coil impedance matching inconsistant result
1) If you have an inductive load with an impedance you're trying to match you can't do it with just a resistor.

2a) You can't treat an inductive reactance as if it were a pure resistance because the voltage across it and the current through it won't be in phase.

2b) You can't treat an inductance in series with a resistance as if the reactance was a resistance because the voltages across the inductance and the resistance won't be in phase.  

3) $$ Xl = \sqrt {Z^2 - R^2} $$