That's 20 watts, not 2.200^2 x .00005ohms = 2 watts
Can you please link to me a MOSFET that can conduct 200A and only have an Rds(on) of 0.5 mOhms? The lowest I could find @ 200A is 5 mOhms, which means 200^2*0.005=200W.
http://ixdev.ixys.com/DataSheet/99273.pdf
BJTs are part of IGBTs, which can conduct that much. My point is that for high current applications, the properties of a BJT are far more suited than that of a MOSFET, and that's why hybrid version of the two are used: IGBTs.Considering the fact that you can't blow 200 amps through any single transistor
The whole point of this argument is that I don't agree with this statement:
but a MOSFET will always beat a bjt at high currents