“The French Army was larger, better equipped, had the advantage of fighting a defensive battle on their home ground.”
This is only partly right.
The French (and British, and Belgian) armies had the advantage of the defense in 1940, but numbers favored the attacking Axis powers.
Allied forces in France, total, were 2.8 million.
Axis forces in the French campaign were 4.1 million, a better than 3:2 advantage in manpower. There were 144 Allied divisions facing 173 Axis divisions.
The Allies, combined, had 3100 aircraft. The Axis had 5500, a better than 3:2 advantage in favor of the Axis in that decisive arm.
The Allies had about 900 more tanks than the Germans, but German armor was combined into strike forces for blitzkrieg warfare, while the Allied tanks were spread out among the thinner and considerably less numerous Allied forces, and a material number of those Allied forces dropped out of the war swiftly when Belgium collapsed.
Had they had better tactics, the Allies had a fighting chance in France in 1940, but in point of fact the notion that the French outnumbered the Germans is a myth. The Germans BADLY outnumbered the French in airpower and troop strength, and significantly outnumbered the combined Allied forces as well.
Another myth is that the French surrendered without a fight.
Actually, in that two month campaign, there were 360,000 dead, which was very heavy casualties (for reference sake, it is about double American losses in all of World War I).
France did not surrender without a fight, and France in no sense at all had the military advantage in 1940. She was outnumbered, badly, even with her British (and Belgian) allies in the field. France fought, hard, but it is a short distance from the Rhine to Paris. The French were outmaneuvered by new tactics in the hands of a numerically far superior enemy, and they lost the war in the field. But they fought.
There were no computer simulations of 1940, because the computer wasn’t invented until later in World War II, by the Americans.
There were computer simulations done of Vietnam, which showed the Americans winning an easy victory in 1966. Of course, simulations are only as good as the parameters.