$13M/yr is a lot more than I thought he would get. He is obviously being paid on future potential rather than what he currently provides. Hopefully that contract is considered tradable because the Cs seemed to bidding against themselves.
I like Smart, I really do, but do not think it was worth it to go into the tax (or trade other valuable rotation players) to keep him above the QO. They could have essentially signed him for $15M/he next year if he just came back on the QO and still paid the same amount. Like I said, they must be banking on future potential on this deal.