Your figures for bomb tonnage dropped on Western Europe has to be way off.
Just the USAAF dropped 188,563 tons of bombs on Germany alone from the 1st of Jan. 1945 till wars end.
The RAF dropped 191,540 tons in the same period.
If you took those figures from May of 44, and included the whole of Western Europe, both figures would no doubt increase by a factor of at least 2 if not greater.