How is the scaling? My impression was that the Risk figures were smaller than Descent, but obviously I could be wrong.
After placing the elves and other small units side-by-side, I don't think it's completely unrealistic for the Runebound universe Deep Elves to be this size, especially since they're specced to be assassins. Granted, they could be bigger and still fit within "Deep Elf" parameters to me as well.
I'll let you know if my tabletop gaming group complains.