NEM has an API, not a language like Solidity. There is no bytecode run from the blockchain. That video explains how they target different customer bases and the time to market.
My .02, I've only seen iDice as the pinnacle software released with ETH, the rest are give me your money and see what I might do with it. When I browse Mist I see a lot of nothing, mostly crowdsales. With that saiid, yes, I mine ETH.
RE: Ethereum VS NEM. The difference between Ethereum and NEM.