Gonna disagree with you on this one man. The production isn't really anything special. Usher's vocals are great though but I dislike him as a person so perhaps that's why I'm turned off.
It's kinda like when Diplo worked with Beyonce/Nicola Roberts. Wasn't impressed with those beats either (which were just Pon De Floor rehashes).
Still, Diplo's worst stuff is still more interesting than your average manufactured pop production.
I agree that the euro-dance/rnb combo needs to go away soon, it's so stale.