No, mate, I played War of the Roses for a week when it was released, and I had no issues with ping at any time of the day, unlike cRPG. If I played Left 4 Dead 2 or any other online game too, I never had any connectivity issues, whereby, in cRPG, I have been having lag for a long time now during the afternoons.
Also, whenever I am experiencing this lag with the EU servers, my ping to the NA servers does not change at all. In fact, in some occasions, the ping to EU servers rose to a value even higher than that of NA.