I never did understand why chief felt we would be interested in an ai vs ai match. All anyone ever wanted to know was how the ai played against HUMAN opposition, and he gives us an ai vs ai match! You could have an all CPU match on either ashes 09 or ic2010 (possibly both) that gave realistic match results. Look how that turned out against human players!!
There was a test match in real life, and I ran the match in the game to see who the computer thought might win, in the grand tradition of every sports game EVER made having done the same for something at some point.
Do remember that in ANY game, the AI will react to the actions of the player, so results would vary with human interference.