The CDG has under half the tonnage of the Enterprise. For reference, the Navy's WASP-class LHD (http://en.wikipedia.org/wiki/Wasp_class_amphibious_assault_s...) has the same displacement and similar length.

Russia's Admiral Kuznetsov (http://en.wikipedia.org/wiki/Russian_aircraft_carrier_Admira...) is a bit closer, although it's a slightly different kind of ship (and until refitting it's a barely floating rust bucket).