You've ignored my point though, why are buses an adequate alternative to the train on the Atherton line but not Huddersfield-Cas? Why are long-distance passengers a priority on the former but local passengers a priority on the latter?
And when you consider trams' better penetration of the city centre compared to heavy rail it is seriously questionable whether they are slower than the current offering, especially considering superior electric acceleration.
That's because on the Atherton route, the bus and the train serve different markets. If you want a slower journey, but thats a little bit more "door to door" because it stops more often, you get the bus. If you want a fastish journey to the centre of Manchester or the WCML, you get the train. The two complement eachother.
What you're talking about is shoehorning everyone onto the same mode of transport for journeys that aren't suitable.
As for the guided busway to Leigh, I'd rather it were re-opened as a railway. As it is, it doesn't suit my needs whereas the good, swift railway service from Atherton does.
A class 399 [just a tram-train reference] has 1.15m/s/s of acceleration, the 158 has 0.8m/s/s.
How would it be slower, when the max speed is still reachable and acceleration is better?
Because it'll be pootling around the streets and stopping everywhere. That's how trams work.
I also use the 582 from time to time. Recently, it seems to be suffering the same problems as some TOCs - a big shortage of drivers for the operator (Diamond, part of Rotala group), with long gaps (up to 35 minutes) when there should be a bus every 12 minutes.
I must admit, I've based my observations on the last 10-15 years or so, but over that time I've found it generally reliable.