6G
From what I remember Air Wales did very well on CDG in terms of pax loads often achieving averages of around 85% however the yield that was needed to operate into such a highly expensive airport just wasn't there.
I think an ATR72 will do well into CDG but I don't think ORY will capture the type of passenger that will pay the high yield, there's not enough leisure passenger to fill the aircraft alone, not when there's an EZY and BA service just down the road.
Cheers