He still has to be in form at domestic level. You can't pick a guy who is out of form in the test side, regardless of prior stats, and his stats are not that good.
Fair enough about the current form but as for the 'stats are not that good' in the recent tests he played - utter garbage. As said, averaged 72 since his recall. That's probably competitive with any bastmen in the world in that time, never mind any number 6. How can you say that's not 'good'?
For a time that Australia has dominated Symonds has hardly been racking up the hundreds has he..and I don't rate his bowling at all. As for Watson he would have played, would have been in the side ahead of White, and batted 7, Haddin at 8.
Racked up a good enough average either way. And his bowling has been excellent. Bowling up to 20 overs and rarely going for more than 60 from memory. Ignore his average he is more important to give the main bowlers a rest and keep things quiet and perhaps pick up a wicket or two here or there. Broke a few partnerships and provided a bit of a spark the main bowlers couldn't quite a few times. I think he did enough with the ball.