Obviously it was a better trade for the Pelicans, and like Azurepred said, a crap deal for Sactown (ESPN reports that Detroit was offering Andre Drummond for Cousins), but does it make New Orleans a contender? On paper, a front court of Anthony Davis and Boogie Cousins is a MONSTER, but is it enough for the Pelicans to seriously challenge in the west? Sure, the Pelicans can beat anyone in one game, but over a playoff series, their lack of wing players will expose them. Maybe their best case scenario is having Boogie and Anthony Davis wreaking havoc in the post and fouling out the entire front court of the opposing team.
Having said that, it was a trade that New Orleans had to have made, since they got Cousins for peanuts. If it doesn't work out, New Orleans can flip him again next year.
Apparently, the best value Sac could have gotten was Andre Drummond from Detroit...but Sacramento declined.
EDIT: Just read that Sac threw in Omri Casspi, too, who, while not an all star caliber player, is a decent wing player and three point shooter. SMH.