"The field pieces were certainly superior to those of Prussia and Austria and I would submit they were also superior to the Russian field pieces of the 1805 System."
That is a very bold statement.
1. No amunition limber
2. Problems with water ruining rounds.
3. Handling individual charges,
4. Too small a limber wheel [granted that it was bigger than the Austrian]
5. 4-pdr out matched by the opposition.
6. 8-pdr too heavy but had the punch so was liked by the Horse Artillery.
7. A large number of wheels sizes within a battery
8. Poor obsolete Gribeauval Howitzer. This was replaced by the Long Porte Howitzer which was based upon Prussian Designs,
9. Gribeauval all up weights were greater than Austrian, Prussian and Russian guns as already discussed between us.
10. The weight of metal was greater than required for the purpose.
11. More expensive to produce than AnXI guns as a more complex casting.
12. Used ammunition that differed from the accepted calibres in Europe so a problem over supply especially in Germany.
13. The bore length was longer than it needed to be with the improvement of gun powder. The better the gunpowder the shorter the gun tube is needed. The tests on tube length in the 1760-70s are no longer valid with the improved gunpowder thanks to Lavoisier that the Revlutionaries so kingly guilutined.
14. Powder charges were higher than they were required with the improved gunpowder. They could have been reduced to 1/4 rather than a 1/3.
15. Napoleon's criticism of the 6.4in howitzer compared to the 24-pdr. More ammunition and more accurate as longer bore length for the 24-pdr howitzer.
The technology was 7 Years War vintage. It answered the questions that came from that war. You always fight with the weapons of the previous war. In many ways the AnXI system was much better but not fully implemented due to the poor financial situation. It is interesting to plot the bankrupcy of France and tinkering with their artillery. AnXI had a poor press because it was created under the Empire and not the monarchy.
The French Artillery served inferior equipment superbly. They made the most of the equipment and to the full.