IMO people seem to respond better when she releases more pure pop , human, bubbly albums and thats why "Circus" had better album sales than "Backout" and "FF". She definately does better when she is more pop.
when she is more like electropop / dance her sales struggle. (Blackout & Femme fatale).
Even though I prefer her "Blackout" music, Strategically the smartest idea is her next album should be more pop, organic or human.
