The PC loss ratio's actually improves greatly on the TT.
1) For example on the TT two BG', one three bases of superior, lancers, uphill, heavily armoured knights one deep fight in impact vs. other an unprotected poor mob in a line two deep.
2) The lancers get 6 attacks re-rolling 1's, needing 3 to hit and get 5 hits.
3) The mop gets 6 attacks re-rolling 6's, needing 5 to hit and get 3 hits.
4) The losses in the system are not linked to who wins, but the knights do with and the mob take and pass a cohesion test, typically neededs a 10 to pass (lost, lost big and lost against mounted in the open).
5) We now convert the hits to base losses - The Knight roll a 1 so they they lose a base = 33% losses.
6) The mob needs to and rolls a 6 to avoid any losses.
7) 33% to 0% Had the knights started as a 4 base average unit (not uncommon) they would now rout.

The PC game does use a distributtion curve to allocate losses depending on the number of hits obtained and its rarely zero. As units strengths are stored as a percentage all losses hurt a unit.
9) I like the TT a lot and play it a lot but it seems hard to improve on what we have. To guarentee losses in a combat by the better side would not be fair or historical as there are far to many battles where, until one army routs, losses are minute.
Keith