The fact that this question is even asked... Beyoncé has been slaying since 1998, non stop, is a major influence on so MANY artists today (including Chris who worked with Rich Harrison after the Crazy in Love slayage and who's B2B lead single was compared to Crazy in Love by critics), influenced a whole style of singing, became the new blueprint for live performances and people are actually voting for Christina
No offense, I like X. And she is influential, but she's nowhere near Bey's status.