Yes. We use average damage.
I wanted to attach a file, but it's not working yet; I'll figure out how it's done here in a moment...
Looks like it worked...
Only it's not a Doc file, but an Xls; you need to rename the extension before opening.
The forum doesn't allow saving *.xls files
The file is for those "in the know." It contains the unit table and calculation formulas (Sheet2).
And on the first Sheet, you can copy a unit's parameters into the first cells, and it will automatically compare two units, indicating the damage dealt and the number of hits required to kill the opponent :)
I think not everyone will get it right away, sorry — I made it for myself :-)