So they rush released the Mark Ronson and Bruno Mars original version of the one Fleur sang. It should have come out in January but after the success of the X Factor version they put it out early. Now it is Number 1 with Fleur's version slipping to 2. I guess that's the Christmas number 1 sorted.

Just proves how stupid it is to hold back a single release for over a month to "build buzz".

Giving it to the X-Factor singer was almost guaranteed to make it more popular than the original version.

Makes no difference as The X Factor version is not eligible to chart as per iTunes, Syco agreement sales figures are not submitted for any X Factor tracks during the competition. The money made goes directly to Syco/itv with contestants making no money from the live performance sales.