I think okc definitely won the trade and kanter is worth more than we got. (I know you were asking triple k but I just wanted to chime in)
I personally would not have traded him for what they got back, but what's done is done. As I see it, there's 3 ways that the Jazz win this trade. . .
#1.) If OKC fails to win a championship with Kanter as a key factor. Kanter and Waiters are both mercenaries brought in to put the Thunder over the top. Anything short of that and they lose the trade. Especially since it's been addition by subtraction for the Jazz. OKC took on a lot of risk with Kanter. Risk that he'll leave as a RFA and they get nothing back. Risk that he'll tie up their cap space with the QO and then leave the year after for nothing. Risk that signing him long-term could alienate KD (since both might be UFAs together in 2016. And risk that they make a long-term commitment to him (at a considerable investment) and he struggles again with injuries and/or ineffectiveness. The payoff looks good now, but they still took on a lot of risk.
#2.) If the Jazz use the cap space provided by trading Kanter to acquire a key player via free agency or trade this offseason. Ultimately, trading Kanter moves Gobert into the starting lineup and creates some cap flexibility right before the salary cap jumps. The Jazz win this trade if they utilize that flexibility to acquire a player that's better for them than Kanter would be.
#3.) If the Jazz turn one or more of the assets acquired into a better player than Kanter. 2017 is supposed to be loaded, and the Jazz will have other assets to utilize as well. If the pick from the Thunder gets used on a player that has more value to the Jazz than Kanter would have, then they win the trade - especially if OKC never wins a chamionship with him on the roster. Before you denigrate the value of that non-lottery pick, I'd just like to point out that Rudy Gobert, Dennis Schroeder, Giannis Antetokounmpo, Draymond Green, Khris Middleton, Jimmy Butler, Nikola Mirotic, Kenneth Faried and Kawhi Leonard were all recently drafted after pick #14.
So, to recap. . . as I see it. . .
OKC wins the trade if they win a championship and then guess right on how to handle Kanter moving forward this offseason (or next if he takes the QO), and the Jazz win the trade if anybody but OKC wins the championship this year, plus if the Jazz utilize the cap space well this offseason OR if they turn the pick into a valuable contributor or star player down the road. Like I said, I probably would have kept him vs. what they got back, but this debate is a long way from being decided.
Ideal situation for the Jazz would be to have the Thunder play well enough to make the playoffs, but fail to win the championship (likely conveying the pick in 2017) AND watch Kanter leave on a massive RFA offer that the thunder can't afford to match with KD and Westbrook both having FA coming up, AND have the Jazz utilize the cap space to make a big acquisition this offseason to complement Gobert, Favors, Hayward, Burks and Exum, AND have the Jazz nail a homerun on the pick when they actually use it.