I think that a PPP adjustment is required here to produce a reasonable analysis. Or, excluding primary residence.

For the 0.1% or higher (whose wealth is sufficient for them to take advantage of globetrotting) absolute numbers might be important.

'The 1%' is not simply a matter of wealth; a person with $500K in the UK and in Nigeria are not really equivalent. The former is just a person who owns a normal home in the South East outright, the latter may well be in a position of power.