I don't think that is what brianvf is referring to. There was (and hopefully will be) a predictor tool that allowed you to play with matchups and see how various outcomes affected the teams' Pairwise. USCHO maybe.
The computer picked best available for me too, but there was a "change" button. I was running out of time (had a tee time 10 minutes later) and my credit card was initially denied so I didn't try it.