Not necessarily - Ancestry has specific databases that FMP does not, hence we normally help each other out on the forum TD
Couple of Headstone photographs from WW2Cemeteries (Bondues Communal Cemetery ) link as photos in gallery are © Werner Van Caneghem and (below) Findagrave. (credit Emma Lescroart) Kyle
Note that the second of the two images posted, headed page 36, was the first casualty list and shows him as 'died', with the wrong initial and DNR. This was corrected by a subsequent casualty list, headed page 30, that states 'died of wounds' , with his correct initial and the actual date.