My sense—and, again, I'm an amateur—is that it probably exists, but it doesn't work its way up into the higher levels. As an example, when half of the voted authorities for a department are just simply referred to as “operating”, I've got to believe that if I drill down, I'll find they came up with that number for a reason. I think the data that drive those numbers exist, but the point you make is that in some cases it's apples and oranges: different departments calculate things differently, and you can't simply take the numbers at face value and compare.
I think that's where the Public Service Accounting Board may be very helpful to the committee in terms of explaining how it should be done. If everybody does it the same way, we get around the issue you've identified.