We lost to the Belgian champions over 45 minutes
You said playing the Belgian champions, the Dutch champions, the 9th best team in France and the 3rd best team in Italy are tests and will help us work out where to strengthen and how to play against premier league sides. No mention of wins or draws against current championship clubs. By your own admission how do results against them show us how we will do against premier league sides?
So based on the tests you outlined and our record in them of P4 W1 L3 F1 A6 show that we have come up short By some considerable margin, do they not?