O'Neill made some signings at Villa that turned out very badly and that was after chiding Lerner in the press for years to squeeze more money out of him.
That said I always thought he was a quality manager up until about three or four years ago. I think the suggestion I recently read that he's lost interest and become close-minded is on the money.
I know it is hypothetical but do you think a Wenger or even a Fungus would have done any better, given the same time scale or have the owners got it right by employing a certifiable nutjob?
Wenger would've done better than O'Neill in my opinion, as for the current situation there's so little time I think any manager brought in, including Di Canio, just needs to get lucky.
Why would Wenger have done better at Sunderland? Reputation, charisma, positive mindset, systematic approach to training, health and fitness, willingness to work positively with limited transfer funds, and willingness to let players play to their strengths.
I don't think Ferguson would be capable of moving to a new club.