Akshully both are dubs, but the script and mocap sessions were done in English. On top of that the French dub was outsourced and the game director and lead writer weren't in the studio like for the English dub, and it shows IMO. Some French lines clearly don't have the same level of direction as the "canonical" dub.

However I will say it's still a better dub than most French dubs. I'd argue the bar is on the floor but the francophone dubbing lobby would draw and quarter me for holding such heretic opinions.