You're probably right about all that. Still, there are points in the 100 years war when the troops are fairly different. Toward the end it became more homogenized, but in the earlier years, England had a professional army while the French were hanging on to feudal style armies. Probably not enought to make it worth it of course, but hardly identical.
Oh definitely true! Sorry to imply otherwise, and really when I say that the armies are the same, I'm saying that with my design cap on. Your average BGFW faction has 12 different units, so when you're looking to make an army you have to ask yourself "is there a dozen units in there?" And while you can get some real mileage out of "Troop X, rookie version of Troop X, elite version of Troop X" for one faction, if the two armies fight the same way you have ask if you can really get enough differentiation for 12 units per army.
Its why, as I've said, the Greeks would be hard to do as a pair.
The interest in the thread was gratifying at least.
Hey its fun. I've had my interest in military history renewed as late, so sorry if I launch into my lecture/analysis.