With in my Ken, among all the coins using Blockchain technology with few unique features, I think success for any coin comes with unique features and it's 'practical' applications/ use, which I think is most important. I believe and invested in NEM because of it's growing practical applications.
If we are talking just technology 'Tangle' (IOTA) seems to address some issues commonly seen with 'Blockchain'.
Yes, just like ETH.. Nem is build to be versatile for applications like dapps that can be integrated in the NEM blockchain. IOTA seems to be in the dark still for many people who are unfamiliar with the unique technology, so i expect blockchain continues to grow so will Iota technology awareness will continue as well.