Well you pay two times more to see the same doctor ! and it is not a French State pension, it is a private pension not covered by the state in case of bankruptcy which should happen in 10 to 15 years, it has more AF captains retirering than new joiners to the sheme. It is not a sheme based mainly on stocks (mostly on real estate),it's an old fashioned one ruled by social security
here is the link
http://www.crpn.fr/crpn/crpn_regime_reforme.html i am sorry but this web site is not traducted in english !! But basicly it says : Alarming projections for mid and long term, a massive reform is required
if you want to put 14% of your salary in something that will not exist anymore when you retire, go for Paris man