Oh yes, because those third world countries where people have trouble affording food actually buy digital music.
Katy is above Gaga is all the major Itunes markets (USA, Australia, Canada, Germany, Mexico, and soon Brazil) the only two major markets Gaga is above Katy is France and the UK (which Katy hasn't even released yet.
) Katy will be higher on Mediatraffic and will have longer longevity.