Well I am by no means a specialist of ancient weapons. And I have no reliable sources or any real life experience on the effectivenis of such weapons - (maybe just a little with composite bows and I think in EB they are far from being underpowered).

My statement is mostly based on my experience with EB - I'm not sure wether missile troops are underpowered - it depends alot on circumstances. I also think that a unit of skirmishers kills more than 10 people per volley expecially if they are unarmored - in theory armored units should suffer about as many casualities unless they have shields (most armored troops do have them)

I also believe shields to be a quite strong defense against missiles - if Peltastai or any javelin throwing unit trows them at a steady unit of men with shields then they won't cause much damage. Same goes for archers and slingers. The picture however changes alot when they trow the javelins at the rear or side of the formation...

Conserning cavalry - I don't think there too strong - like sad earlier charging them in a line of prepared spearmen (even if light infantry) is not a good idea. If that happens then they most likely will suffer more casualities then they can cause.

Still I can't be sure how close this is to historical accuracy.

A few things which might unbalance testing and should be mentioned: like sad before the difficulty level EB has been made to be played on is Medium - because any other dififculty would give a large advantige to either side and woul upset balance.

- In campaign: the number of command stars a general has can give many bonuses to the abilities of their troops. The AI usually has more stars then your generals will get - this is ment to give the AI a chance of an equal fight against you (since the battle AI can make lots of nonsense).

Vuk. I think you should take this into consideration when testing troop performance - I'm not suspecting you don't know of these but since you haven't confirmed or denied this in your earlier posts I can't know for sure.
In no way am I atempting to insult you or doubt your knowledge. I'm just stating my thoughts.