As the more rational have pointed out, simply flinging passenger numbers around proves nothing about commercial viability. Stansted has always had to pay its users to go there, in effect, which is why it has ended up with the user profile it has got.
There was a time in the 1980's when Stansted's gross income, from all sources, was less than Exeter's which had 10% of Stansted's passenger numbers. Thius caused huge amusement/embarrassment at BAA meetings, because they were run by BAA (Stansted) and Airports UK, a BAA subsidiary (Exeter).
The point now is that no sensible financier will invest in an airport that is totally dominated by volatile users such as Ryanair. That was true before the credit crunch, its even more true now.
And that's why it's a turkey.