History revision is a guessing game. Most of the French troop for WWII were never born. French birth rates have been much lower than other European countries dating back to before WWI. Troops in WWII would have been born mostly 1910-1929/30. The French lacked sheer male numbers. Their fortification line was one hope to offset that short coming. But every military is better at refitting the last war in hind sight than correctly predicting the next one. Had the German gone to a trench warfare plan instead of a war of movement the French were well equipped to withstand the Germans for a very long time. But the French never got the email that the Germans were not going to play that game.
It does not matter what you can win militarily if you can not hold what you took.
Let us finish this conversation on the point that we will not be defeated militarily. Nobody is going to invade us militarily, but we will be defeated economically. The truth is we should have demilitarized after the fall of the Soviet Union and secured our borders after there was amnesty for 3 million or 3.5 million. Sadly we are now on our way to financial collapse. Now let us get back to some of the best game guns ever made French guns.