I see no mention is made of the flight test and oral exam. This is also the reason why they are different, it is a proven fact that you will retain more information if you have to recite it in an oral format and explain yourself. Which is what the FAA system concentrates on. Also the FAA flight test system is alot more stringent than most other ICAO countries, they concentrate on the flight portion, as at the end of the day that is what you do, Fly. We can debate the finer points for ever, bottom line is the FAA spends more time and money on research and they have found a system that works for them.