Beer, I don't know the details of the discussions between Murray and Campbell, so I can't speak to that.
I remember Garrioch or Brennan writing a lengthy article (which I have wasted the better part of an hour trying to find) that stated Murray offered Campbell slightly less term (6 years maybe?) and about 1 mil less per season on average. In that same article Murray stated that he couldn't commit any longer due to the Sens cap situation at the time and moving forward.
I don't recall if they had quotations on Murrays statement or if they were speaking on Murrays behalf, which would weaken the integrity of those already suspect writers. But that is what I was referring to and I'm thinking if we cared enough to dig it up that is what we'd find.
Either way, that alone doesn't mean it's a bad deal. I'll have to evaluate Campbell's performance over the next few years to see how good/bad that contract is.