Bielema is awesome against Minnesota, Purdue, Indiana, and Iowa. Kinda shaky against everyone else. He's never had the kind of coordinators and assistants that can help him build a juggernaut because Wisconsin doesn't pay well. Bielema is a good recruiter (has connections in both Florida and Texas which has served him well in WI and will continue to serve him well in AR). But Wisconsin's facilities are not good compared to OK State, OH State, and the SEC so that has held him back.
So, by going to Arkansas, he is accomplishing 4 things...
1. He is getting out from under Alvarez's wing. The hand-picked successor now goes out on his own to sink or swim.
2. He is getting an administration that will allow him to bring in the help and structure that he thinks he needs to win and maybe/hopefully win big on the biggest stage.
3. Once he learns the magic of oversigning and aggressive recruiting, he should be able to compete for the kind of talent he could never get in Madison.
4. Everyone should know by now, in order to win a National Championship, you're gonna have to beat an SEC football team eventually.