Webberweather53
Meteorologist
Isn't the "sw bias" due to higher resolution problems? If so, the Canadian has been tweaked around 4dVAR or something along those lines and very well could be suffering from the same thing, if the idea is even true at all.
Now I'm not sure if this over-amplification bias is partially attributable to the Euro's resolution, convective parameterizations, depiction of elevation in the model, none or a combination of these or perhaps even something else. Taking this question that far would be something worth posing to the European Center itself or looking for in literature..