4 warrior dwarves died against 1 insect (ratio, 4 vs. 1 and still lost)"[...] a party of sixty dwarves to Arborea to punish the humans. These warriors never arrived. On the way, the party was ambushed by fifteen insect-warriors."
I can understand that admin does not want to boost insects too much, because it would make it harder to play for the playerchars, and people tend to complain.
However I did want to point out that the background really talks about very strong insects. Perhaps there are different insect warrior types, and those insects of today are weaker too, but in my opinion if one insect can slay 4 warrior dwarves all alone, and win - then this is pretty scary stuff ... ;)
Edit: Ok, they got help from the humans so they didn't all die ... but it doesn't make it much better:
They only beat back those 15 insects. They didn't outright kill them all ... and these were only 15! :)Together they beat back the insects.