You could very well be right Bill ... just thought it might be worth a try? I've actually got three different "test franchises" going with the hope that at least one will give me the challenge I'm looking for. Surprising thing was, in a brief series of testing last night I actually saw quite a few errant passes from the cpu trying the "increase only method" ....
I was just thinking that for example with both human AND cpu set to pro difficulty, they would essentially offset each other and play balanced? Years back (old gen) I remember quite a few of the OS found PRO to be the most realistic level to play on, albeit with cpu and human sliders greatly tweaked. Of course now sliders are set up differently so may not work at all?