On that basis, I think that you could still find some equivalence.
It is only for the benefit of the Pools companies that we get to hear about teams in the third tier of Scottish football, some of whose matches are attended by fewer than 200 souls. If BBC and others were to report on the likes of Tooting and Mitcham, Kingstonian, Dulwich Hamlet, Welling, Harrow and Wealdstone.......... all of whom have much higher attendance figures, you would see that there are an equivalent number of professional/semi-professional clubs in Greater London.