Guy is just FUD'ing
https://nxt.org/news/Ardor is NXT2.0, which means that as soon as the ARD get in production NXT will be discontinued, this is why i conseder it as no longer existing. And it will happen soon.
You should also note that NXT and ARD aren't made for integration, they are made to be a self containing ecosystem, so if his company wants to have the possibility to integrate their coin, the best is to use bitcoin forks or Ripple, as they are made to be integrated, especially bitcoin forks, made for all the languages.
NXT will not be discontinued, try to read again
"What will happen to 1.0?
The Nxt Core Devs are committed to providing support, bug fixes and any possible emergency updates for the Nxt 1.0 chain.
It will not be necessary to burn your 1.0 coins to receive 2.0 tokens, and you are free to trade your Ardor Tokens which you will receive after the snapshot period has ended.
The Core Team wants to make migrations to Nxt 2.0 as easy as possible, so is allowing a wide window for making this move.
In short, nothing will change for Nxt 1.0, except that active work on new features will come to a halt. The platform will be actively maintained, so users will still benefit from a secure and well-kept platform.
The Core Team will also provide help and support for users that wish to move their enterprises from Nxt 1.0 to 2.0."
Quote from:
http://nxt.org/roadmap/And POW is out of business for private corporations needs:). Just compare core features of Nxt and other POW blockchain and come back here and try to answer OP request again