So you basically want to record "log" files. The thing is, to calculate results you have to store them all in one single file and then you have to produce some actual code to deal with it, although that would be probably doen in a script kinda format.

The thing is, the players victories depend greatly on the players army composition, so unless you have a record of all units available on the battlefield your results wont be that accurate anyway. I mean, if you are fighting Numidia with an all hoplite army, chances are you are going to lose even of you have the advanage of numbers. So a pretty detailed composition of the army would be needed, and including some 200 units would be quite a bit of work...

But if you can dedicate it enough time I think ot would be a nice feature.
Good Luck