[asfasgasg]

BA tops the list at 1B revenue NYC to Heathrow. Virgin runs 80% as many flights on this same route, so they should be making in the ballpark of 800M revenue on that route. This is more than a number of other entrants on the list.

So I can only assume that the metric on display is something other than what the title and blog post communicate. It is something like,

    - Select all airline-routes pairs.
    - Group by endpoints and airline.
    - Order by SUM(revenue) DESC.
    - Drop duplicate routes.

That is, for any given route, they report the revenue of the highest revenue airline on that route. They select the top ten routes by the single airline making the most revenue on that route. This is an utterly zany metric and I can't imagine what use there is knowing it, but there you have it.