See if I can say this without getting sniped!
As products they are not comparable. As said before WT+ is a very small step above economy. NCW is the best business class in the world.
BUT, NCW is generally 3 times more expensive than WT+.
No company or individual can baulk at the cost of WT+ compared with regular economy. NCW is not so much an additional premium as an entirely different proposition.
Comparing them as products, when there is such a price differential, is academic really.