the article on cointlegraph it's a branding campaign? Whats the different between IOTA and NXT?
No, they wanted an interview about IOTA, micro-transactions and Internet-of-Things.
IOTA and Nxt is very different, but can collaborate. IOTA is in short a blockless cryptocurrency without fees that is designed to be as lightweight as possible, wheras Nxt is a full proof-of-stake blockchain platform with support for all kinds of features.