And I have different opinion here - I hate my soldiers dying
I'm not sure what kind of situation do you mean: Can you please show some example situation where the lethality is causing some weird level of casualties?
I mean, if two units of relatively even qualities will met, I expect that they will be damaged evenly, and I expect that they will fight to kill and for their lives, not to engage in romantic duels with 50 strokes required to achieve single kill (most of time five should do, the more the quality differs, the more the one-side massacre).