there is a difference Lone wolf - the RAF counted "houses destroyed " and "people unhoused" - clearly these houses were totally unoccupied on the night of any bombing
The US Army (encouraged by the lunatics in Washington who thought you couild measure everything) elevated "Body Count" to a major metric - the Vietnamese housing industry being less obvious than the German one presumably
and as usual once you use any number as a driver everyone learns to crook the numbers