She obviously cares about the charts and the fact that she can't be real about that is ridiculous. Gaga has contradicted herself more than once this era, claiming she doesn't release music for the charts and at the same time bribing her fans to buy her music:
encouraging her fans to put her videos on replay
retweeting other websites that boast about her sales:
and misleading her fans with stupid tweets inflating her sales. Even if you are a fan you can admit that she's coming off as a hypocrite.