Exubae said:
Easy of use/training and utility (as well as obvious production costs) are the historical reason for the migration from one form of missile weapon to the next.
Sling --> Bow --> Crossbow --> Black-powder smooth bores --> etc
Well, although that is
sort of true for some areas of Western Europe, it isn't for large areas of the world.
Many cultures and nations simply didn't generally bother with crossbows, as their bows were already more powerful and adaptable. The Ottomans being a good example, using bows far into the 18th century for their rapidity and penetration (the Ottomans were also pretty keen on guns, of course).
While on the other hand, the Chinese invented the crossbow very early on, and after never widely bothered with bows (although invading nomad elites did, and placed some status on doing so until the early 20th C). These are examples of cultural bias... the native Han stereotypically thinking the bow "barbarian", the Mongols and Manchu thinking the crossbow "effete".
In India and SE Asia both were used side by side.
Even in Western Europe the crossbow didn't take over, and was even seeing a major decline in the 15th century (except in the Empire). For example, the King of France certainly had ready access to crossbows, but chose to have his Scots bodyguard equipped with livery bows. In Burgundy, England, and to a much lesser extent Northern Italy with their colonials, livery bows (and recurve in Italy) were far more widespread... even though they had the manufacturing and population to take advantage of crossbows. Then guns came into use naturally.
MRQ2 makes generalisations, but there are huge differences (for very good, rational, local reasons) due to geography, culture, bias, material culture etc.. I have a vague recollection that RQIII had the balance better... but I don't have any of the RQ books to-hand to check.
That said, the biggest issue as regards damage imbalance is with two-handed swords (too much damage) and heavy bladed pole-arms (too little).