No, VH-Foobar, it does not. FL200 is above US and European transition altitudes alike, so I yet again state the different TAs are irrelevant. The Americans refer to Flight Levels as "Flight Level", just like the rest of the world, not as tens of thousands of feet, which is an altitude, referred to as "altitude x thousand feet in both the US and the rest of the non-metric world, so that too is not contributory.
"FL two hundred" was introduced in the UK because of the number of errors of numerical transposition (in fact, it was FL one hundred instead of one-zero-zero, where many pilots then set 110, and the practice since expanded to all the even hundreds). It was nothing to do with transition from QNH to STD.
So, once more, stop trying to make bs xenophobic excuses for two bad pilots.