Agreed that WW could easily fill routes with 3 based A/C.
How is the 4U fleet looking for the winter? Are WW merely opening the route for 4U to take over in the summer should they have a lack of a/c in the winter?
Perhaps they will do the same with other German cities too have WW open them up and then 4U take over.
I know it is all technically the same company but how many people in the South Wales catchment area know who 4U are? Would cost a hell of a lot more on advertising to make themselves known, whereas WW are established.