And in that context the new stock being obtained for the new ECML services to Edinburgh makes perfect sense. In terms of passenger accommodation it is likely to match up to what XC and VTEC will be offering, and in speed it will be able to match their times by running up to the 125 maximum that does/will/could apply over much of the last 200 or so miles of their journey (as opposed to the section of less than 100 miles west of Church Fenton).
How will TPE be able to match XC and Virgin timings when it is required to serve Thirsk, Northallerton and Chester-le-Street, as well as Darlington and Durham, and will serve Morpeth every hour once it starts running north of Newcastle? The new trains may be able to keep up with Virgin and XC services at full tilt but you can't magically vanish the time needed to make those station stops.
However, it seems to be the idea that the new stock for the West Coast route, where the Liverpool and Manchester trains will spend the overwhelming part of their journey on the WCML, will not be able to match the timings of the VTWC trains they are supposed to be competing with. It seems that whilst the new Leeds to Edinburgh service will be fully up to all standards of the competing services on the ECML, the Liverpool and Manchester services to Scotland will not be in the same league as the competing WCML services from London and Birmingham. On the western side of the country it does indeed look as if TPE want to continue to be seen as the slow-cheap-and-cheerful competitor with Northern Trains and not as the offerer of a genuine inter-city service to the great cities of Lancashire.
Since we still don't actually know what the new TPE stock for the West Coast will be, beyond rumours that now seem to change daily and then back again the next day, we don't actually know anything about its performance characteristics...
Why do they need to match the timings of Virgin West Coast? Again, the TPE service has to stop at Lockerbie, so that's an instant time penalty there. But even allowing for that, as I have pointed out previously, current TPE services booked on a 100mph schedule, and including that Lockerbie stop, take a whole eight or 10 minutes more to Glasgow and Edinburgh from Preston than your typical all-singing, all-dancing, all-tilting Virgin service.
I doubt most passengers between the North West and Scotland will be too fussed about a few extra minutes if they have a comfortable intercity train to travel in all the way, which, even if it can't tilt, will be able to run at 110mph on the WCML, so most likely shaving off a couple of the extra minutes anyway.