The first number is based on statistical observation of mortality rate the second is based on classification by doctor at death. It's not comparable at all. For example, if there is an increase in heart related death when it's hot it's not accounted in second stats.

WHO European region also covered Russia, Turkey, Kazakhstan, Kyrgyzstan, Tajikistan, Turkey, Turkmenistan, Ukraine, Uzbekistan and other countries from central Asia so I don't see how you can conclude anything about EU with this piece of statistic. (https://en.wikipedia.org/wiki/List_of_WHO_regions)