From our side of it - the Americans can fly the planes no problem, no better or no worse than any other international airline, however there seems to be a 'slight' language barrier. It may work state side, but definately not here. We have the ICAO recognised standard which we do veer from SLIGHTLY, but the Americans don't seem to have any knowledge of it what so ever. However I can see its the same for the Brits flying in America. Reflecting on that, some Brits flying the 'larger' a/c over here seem to have very similar problems!
Basically, in your own ways, your all as BAD as each other, but then again, we're not perfect either.