Each is right, measured by their own metric. Each is wrong, measured by their own metric. They have different priorities and different challenges, and it's not something that can be objectively determined. DfT, in specifying what GWR was to achieve with the IETs, put a lot of priority on maximum seating capacity, because that was what they saw as the main requirement for the route. Transport Scotland, in specifying the Scotrail intercity services, put a lot of priority on the on-board experience, because they believed that was important for the development of the service.The point still stands how can both be right?