Yeah, follow martismartis advice instead. He'll have you convincdn the moon is within reach. Me, on the other hand, will continue telling you that in the real universe, not only NXT/ARDR has been recently halved (in BTC), but will be much, much, MUCH lower.
Because, frankly, there's no value of any significance there. At all. At least not value that can be compared to about 50 other alts either fully developed or in advanced stage of development be people who pass much more mustard than this "team" of schemers.
I don't care about your financial advice

I asked about the differences between ARDR, IGNIS and NXT.
I just need a quick 1 or 2 sentence summary to clear things up. If both coins are NXT 2.0, then what are the differences between both of them?
I don't need the IGNIS whitepaper, just a quick summary of their differences. It'll help me and others who are also wondering the same thing.