I had some time today apart from my usually busy schedule and so I decided to make a small test on the effect of experience when put on archers. I used the flat grasslands map, and by setting the AI as defender and bringing 4 Thorakitai (one as my general), which I always kept right behind the archers I was testing with, I kept the AI standing still in close formation. I first tested normal Kovkasi Lernain Netadzik (Caucasian Archers), then I tested them with 3 experience and then with 3 weapons upgrade (the two latter both showing up as giving 10 attack [7 being the normal], for the record). I fired from the default formation (5 ranks deep, close formation), always from the direct front (or as close to that as I could come). I fired from the maximum range possible. I did it 10 times per version. Here are the results:
Caucasian Achers (no upgrades, 7 attack) vs Hoplitai Haploi (no upgrades)
Caucasian Archers (3 experience upgrades, allegedly 10 attack) vs Hoplitai Haploi (no upgrades)
Caucasian Archers (3 weapon upgrades, 10 attack) vs Hoplitai Haploi (no upgrades)
Because the difference was so stark, I went ahead and did the same test again, but this time with 9 experience points.
Caucasian Archers (9 experience upgrades, allegedly 16 attack) vs Hoplitai Haploi (no upgrades)
My conclusion from this is that experience points doesn't seem to increase missile attack at all; rather, the theory that experience for missiles only improve their accuracy seems much more likely to be true.
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