Unless they've finally worked out all the bugs, France's CdG is the aircraft carrier equivalent of a hangar queen. I think Russia's Admiral Kuznetsov and her sister, China's Liaoning, have a similar reputation.
It's kind of misleading to class USN Nimitz class CVNs with the carriers of Russia, China, France, and the UK, as the latter have roughly half the air group of a Nimitz. USN America class LHDs are closer to the several nations' carriers in air group capability/size.