Ohh.. Yeah, oil is worse though.
Air popped has nothing to it but hot air popping it, so it's just the kernels right?
But that Jolly Time stuff that you can get in the states as 94% fat free has 9grams of fibre in 5 cups of popcorn, which makes it only 1 pt because it has such high fibre which is one of the main bases of the WW program.
Whereas regular popping corn, when done as air popped only has 4grams of fibre for the serving, so you get less popcorn, because it's not as "filling" of a food!