As a Husker fan living in Arkansas, I might be able to add some information about Houston Nutt.
First, addressing what Nebraska can offer that Arkansas can't, the simple answer is...just about everything. The offer to Nutt is now beyond the monetary level that Arkansas can offer - well over 1 million dollars (Nutt receives about $800,000 currently, which places him in the middle tier of pay for SEC Western Division coaches). Arkansas has already said they can't match the money.
Recruiting - Arkansas has no tradition to offer recruits, and has no major attractions - beaches, major cities, etc. Nebraska has the tradition.
Facilities - While Arkansas AD Frank Broyles is constantly upgrading, Arkansas still lags behind.
Elite status - Nebraska plays to a national stage; Arkansas does not.
Fan Support - Arkansas is, like Nebraska, the only major program in its state. But Arkansans are not nearly as committed...hence the lack of money to offer Nutt. When Arkansas went through a few years of 4 win seasons (before Nutt arrived), the stadiums were not sell-outs. Even now, they aren't always. Depends on the status of the opponent. Not true for Nebraska.
What can Arkansas offer that Nebraska can't? Just one thing - less pressure. That could be a problem if Nutt accepts. For the last three years, Nutt has been criticized for not taking Arkansas to the next level, and for the number of off-the-field problems from athletes. While Nebraska fans are forgiving, they are also demanding - far more so than Arkansas'. Nutt hasn't handled that well - he hasn't lashed out, but it has been clear that he has been hurt. Some of that may be due to the fact that he's Arkansas born and bred, but still...
What are Nutt's strong points?
1. Recruiting - I will say this...he is a tireless and constant recruiter. He has not been as sucessful as he would like due to negative recruiting that resulted from some minor NCAA infractions and some scholarship reductions (all due to actions that occurred before Nutt arrived, I might add).
2. He adapts to the talent. For the last three years, with a quarterback that is a poor passer, Arkansas has been a leader in rushing in the conference and the nation. When Nutt first arrived, he had a passing quarterback, and was a conference leader in passing - at a time when Steve Spurrier was in the conference.
3. A players coach - Players generally love playing for Nutt, and defend him to the death.
4. He has improved every program at which he has been the head coach. In Arkansas' case, he took virutally the same team that had been 4 and 7 the year before (and for the last three years), and immediately won 8 games - and he routinely wins 8 or 9 games while at a school that lacks any of the resources Nebraska has. He's won the SEC Western Division two or three times in 6 years; he hasn't lost to Texas - beaten them twice, in fact; beaten most of the major programs in the SEC - Alabama, Tennessee, etc.
Nutt's downsides? Well, other than the possible thin-skin, there is one potentially huge downside. One of Nutt's assistants is Mike Markeson (sp) - the offensive line coach. While Arkansas has had a good running game the last few years, I worry about Markeson following Nutt to Nebraska - he's been with Nutt at every stop. I don't see good fundementals from the Arkansas line.
Not trying to promote Nutt - I want the best for Nebraska available. Just wanted to provide some information.