Not much goes over my head, inluding your post. I was clearly commenting on the first part of your post. I've already conceded that there's more construction in Manchester than Birmingham. In both cities the vast majority of the large-scale commercial construction will be in the city centres, so your second point is largely moot. I repeat that your statistics around Greater Manchester are a non-sequitur to my previous post about the respective city centre skylines; moreover your (apparent) exclusion of the west midlands conurbation from any like-for-like calculations renders the figures as they stand (in any event) to be meaningless.
I would say that it says a great deal about you, and the insecurities that you manifestly harbour, that you feel compelled to continue to make your point in such a truculent fashion, some seven weeks later, against someone who has conceded being wrong on a particular point.
I'm sure it made you feel like a big man.