Gaga could have been referring to both (she & Bey) of their interest in female empowerment. I don't know, you can take it either way and that was probably intentional (that way individuals could take whatever they prefer from it). I completely agree that Gaga is saying that she used Beyonce to expose a larger fan base and those who's attention Beyonce attracts to Gaga's idea of what the video/pop world should include.