There are some great stats at the end of that article.
They reckon all of football got $11m from gaming in 2012. That's more than NZF's own budget (although NZF would have got a small amount of that themselves).
Also, that means that ACFC receive approximately 5% of ALL gaming money going to football per annum.
Not having a dig at ACFC specifically but it really does illustrate how crazy and disconnected and lacking an overall strategy the funding of football in NZ is.