None of the two carriers clearly outshines the other in any field, but indeed they are different.
AF definitely has the advantage of lacking the need to transfer.
That being said, LH would be my carrier of choice based on recent personal experience.
I cannot really get accustomed to the French way of service, but this is strictly my .
(My recent disliking of the Flying Blue program is a minor factor here (I had been a loyal Flying Dutchman member before, so I joined FB from the "KL"-side).)
The A346 is a even better aircraft to fly in than the already good (read: quiet) A343, IMO.
LH uses T1 at CDG which means pretty short walking distances; a terminal that has been refurbished in the relevant sections.
Only downside might be the (possibly) long queue at security check at the departure gate (in the satellite building).
I leave it to others to point out which exact terminal AF uses for the flight to CCS - and which waiting times are to be expected ...
Carpe diem ! Life is too short to waste your time ! Keep in mind, that today is the first day of the rest of your life !