Well I've been subscribed since 08', and I'm still sketchy on eny. Is it calculated for only in flight planes or those sitting in the O'club having a cocktail?
ENY is calculated using all players on a country, not by using only those in flight.
If your country has double the amount of players online vs another country you’re going to have some ENY or very high ENY, depending on country(s) total.
E.g. Knights had 28 players to Bishops 12 last night and ENY was nearly 30.