I also think the later arrival of the VIE-flight into CDG is not really an issue for AF. First of all there will be the loyal AF-flyers coming back from there business trip. Then, the flight connects well to a lot of later departures to regional French destinations which are not served well out of VIE. I agree that the Asian Long-haul destinations are well covered by EK, TK, QR etc, but there are a couple of other long-hauls which for sure will have a couple of connecting pax, such as GRU, SCL, JNB, DSS.
For a lot of European destinations, CDG is quite a detour from VIE, so I don't think that anyone would fly VIE-CDG-BER or ARN or VCE other than a very price-sensitive customer (which AF does not depend on).