Womanizer was released twice before by accident and reached #5 and #2 without a video or airplay. Christina's name alone isn't enough to sell the song.
^^ I think it is quite incomparable :\
The only thing to compare will be the digital chart, because Leona is releasing her physical on the 3rd, Beyonce on the 10th, Britney on the 24th and Xtina isn't releasing a physical.
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