It's really a common misconception that PTE areas get more transport benefits due to funding it through their council taxes. PTEs get huge government grants for various schemes which non-PTE areas never see e.g. Greater Manchester has got a lot of funding for brand new battery and hybrid buses, while much of the set up costs for Metrolink have been paid for by central government, even if day to day operational costs are covered through revenue.
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I'm not sure what a "lot of funding" for battery/hybrid buses means, but apart from the fact I'm sure it is nowhere near the full cost, the vehicles involved operate on three groups of services.
1. School buses.
2. MetroShuttle aimed mainly at rail commuters
3. An increasingly limited number of subsidised services running into/through higher car ownership residential areas.
Just to explain to those that don't know.
ENCTS is paid largely by Central Government to allow (a decreasing number of) Concessionaries to travel free on BUSES off-peak.
TFGMC (and GMPTA/ITA before them) have decreed that the local Council taxpayer should stump up c. £10million a year to extend this to local rail, and an estimated £2-3 million a year to Metrolink. Its this current spending, rather than Capital spending, I was referring to.