I think you will find that Emmirates flying school is run under the FAA regs, i did some flying there long time ago,and also looked into the same thing as yourself being a JAA instructor myself.Now Qatar Aeronautical college in Doha is a different thing.I think you will find its JAA and FAA there[dont quote me].Im interested in going there to instruct but my hours are a bit low [only 210 instructional]610 tt.New guy at the helm of the flight instruction side i believe.In fact they are advertising as we speak for instructors flight and ground JAA that is.Get on the case and good luck
ps the ad is in flight international