Decentralized smart contracts are probably the dumbest contracts in existence.
Contracts will never be flawless, they will always have bugs. Is Ethereum going to soft fork everytime something bad happens?
Centralized contracts are the way to go. NEM and its Mosaics are the best solution for centralized contracts.
NEM is controlled by the chinese as far as I know. You can say it for Bitcoin too, but it's kinda different story.
Speaking from someone who has been around NEM since the beginning, I don't quite get the Chinese claim. Yes there are some nice Chinese people around NEM, but I don't see them controlling the ecosystem nor having any sort of XEM majority.