Thanks for the link ExXB. I hope that photo of Delta Economy Comfort Class in the link you posted is worse than the real thing?
Virgin and Air New Zealand always strike me as market leaders in the premium economy market and when you look into it there isn't really too many premium economy options of a similar standard on other airlines. Most tend to be preferred seats, exit seats etc
Much as I try I just don't get the attractiveness of Air New Zealand's skycouch product (sorry).