Now I am totally confused. Do I understand that the "plus" option only applies to NL cards, and that "turbo" only to AF France card?
Indeed French AMEX is rubbish compared to the airline credit card benefits that you can obtain in other countries (US, UK, HK,..). Only interest is status miles, but all other benefits are very poor (mileage, upgrade, promotions..). So if you are earn status through flying a lot, it is really poor in terms of mileage. Maybe they will start many promotion such as "turbo".