Don't be quick to forget the Princeton Offense is responsible for 0 championships at the pro level.
Until someone wins a pro championship with the Princeton its safe to say it was both.
Very close minded way of thinking, being that the Triangle is taken from the Princeton in terms of a lot of elements, the Princeton just has more options and is more complicated. If the personnel was perfect and the team mastered the Princeton it's devastating at the NBA level.
Let's not forget the Princeton gave us our toughest challenge during our championship run and if it wasn't for Robert Horry hitting that game winner it was that offense that would have taken us out. And the Nets went to two straight NBA finals using that offense.
So to act like it's not effective just because it doesn't have a ring is very close minded.
There's a lot of systems that have yet to win a championship at an NBA level but that doesn't mean you scrap it.
The Triangle has won 11 championships. Why the heck does no other team use it by that logic then?