I hold an FAA atpl amongst others and do my recurrency to easa standards in Europe on another license. I am not sure where you got the no single engine go around but that was and is a big part of my FAA currency on a 737 sim when I am stateside. Can't speak for JAR but partial panel was part of initial reqs for other license as well.
Biggest difference I have experienced between the two, is JAR is a ball ache and FAA is much more practical. My two cents