I have a few questions for those of you who have the game.

1. How does battlefield difficulty affect the AI? Does it again access to extra strategies a la STW and MTW, or does it merely gain a fat stat bonus a la RTW and M2TW?

2. I've seen some brief comments about unit size affecting the AI's performance. A few people have said it plays a far better game with medium or small units, and tends to engage in milling about and other bad behaviour when set to large. Can anyone expand on this?

3. How is the campaign map AI in the grand campaign? Is it sane? Does diplomacy work?

Any further comments on the AI would be welcome; it's the most important aspect of the game for me. No awed gibbering or disgruntled ranting please; let's keep this one semi-analytical.

Any comments from the developers would be welcome.