well, since gaga said this it's possible that she'd want to steal madonna's soul.
But wow. gaga said so many horrible things about madonna after copying her and lying about M, not only to little monsters but she also played the victim at the howard stern interview, saying madonna "should be upset". and meanwhile she's the one bullying katy perry for copying a simple green hair style.. this girl aint right.
objectively speaking though, gaga didn't literally say it herself, so monsters can still use that excuse. she never literally and directly says something so arrogant because she has no backbone. so therefore I do think it's true and a real interview.