Have you ever handled an original de chasse gun? They don't even have internal bridles in the lock. Neither did the de trait. The de trait had carving and engraving, the de chasse didn't. there were very few de chasse guns made, when compared to the de trait, hard to compare popularity when there were so many de trait guns made. Do you have Kevin Gladycs' book? You need to buy it.
Actually I have had the opportunity to examine several French Fusils, two De Chasse and one Grenadier model, what impressed me most was their excellent condition for their age, however it was difficult to determine what the guns looked like when they were in their prime, most of the finish was gone and the wood dried shrunk over time, I did not get to take the lock off or apart.
But that is immaterial since we are not discussing which technology was available or in content use at the time, these guns were being built from approx. 1650 up into the early 1800's, during that 150 or so years it would be reasonable to expect some changes to be adopted.
Also, as I have pointed out previously during that time period most all guns were built in small cottage industry facilities, from small factories with several laborers to the back room in someone's home built by one man one piece at a time, none of the models were the same quality, not in materials, workmanship, fit and finish, or in the same quality.
While we can discuss these guns in general terms, we can't honestly compare them specifically, simply because they are all individual examples of builders skill and his attention to detail that at best was vague.
And consider also that most of the tooling and measuring instruments that these builders had were home made and that their accuracy wasn't certified by any official from any dept. of weights and measures.
publishing gun reviews he's never actually tested any of the guns that he has reviewed in print, he simply reads someone else's reviews, cherry picks information, editorializes a bit of his own assumptions and submits it for approval, well, I suggest that that went on in the past as well as it does now.
I like to read to further my knowledge, but always take what I read with a grain of skepticism.
BTW, thanks for tempering your writing, it helps to further our discussions.