Yes Bob; you are correct; I have not skied the NTN. However The OPs question was, 1st about the release of each binding. The 7tm is a true DIN release in twisting falls although lacking in an upward release. The NTN is an approximation of a din release; also without an upward component that many have found works well for them; others I have spoken to found that when they set the cartridges to release reliably for them the bindings ceased to be the active binding that attracted them in the first place.
2nd He was curious specifically about how 7tms ski and was it suitable for resort skiing. I have been teaching alpine over 30 years; and tele over 10 years. I know that I personally prefer a more neutral binding; others; apparently including you do not. As an instructor however I have found that alpine crossovers tend to develop solid skills more quickly when they start on less active bindings as it lets them feel how both feet work through the turns. I apologize to Fixx42 for not being more explicit on that point in my original post.
As far as knowing anything about how the NTN skis; this being the internet none of us really knows if any of us is qualified to answer any question. Perhaps I should not have passed along what I have been told by others. However, over the years I have met,and worked with, people who have spent more time on teles then most of us ever will that really know their stuff. I have asked people who I feel are qualified to have an opinion what they think because I really do want the NTN to work. As I stated it is their opinion that it isn't quite there yet for tele turns. I personally have only tried the boots (Crispi and Scarpa) and found that for me the flex wasn't what I felt it should have been(and that my duck feet don't fit). Admittedly that was in the 3'rd year of the NTN and some say both manufacturers have softened their bellows further since then. As a big part of my job is watching people ski, I do it a lot. I see a far higher percentage of the NTN skiers routinely skiing alpine then any other binding. I see a fair number who make pretty good turns. My CONJECTURE- not to be confused with fact- is that there are basically 2 classes of skier currently in NTNs. Experienced, strong Tele skiers looking for and knowing how to use their power. And Alpine crossovers who are happy to have some kind of release and strong enough alpine skills that, in part because of that power, never really learn how to tele. The one place I have seen a large population of strong Tele skiers on NTNs are at the World Cup Tele events. But I've skied on alpine race stock equipment and I'm not burly enough to get the most out of it all day, every day. And I really don't want to put beginner/intermediates on it.