They probably picked Wigan to come first off of the FA Cup win/momentum which should have been able to give them determination to do well, but as we all saw, they broke down...which probably no one could have predicted at the time
As for Bolton...
"Bolton are close to agreeing a new deal with Emile Heskey and signing Stephen Dobbie and Lawrie Wilson.
The trio would join Ben Amos, Gary Madine, Derik Osede, Jordan Lussey and Jon Ceberio as new signings ahead of the upcoming season."