I would love to see Uptown Funk remain #1 this Sunday as it'd be hilarious but it also means the genuinely more popular song stayed at #1.
Even if Ben does get to #1, Uptown Funk will climb back to #1 next week. When Ben's X Factor single drops out of the top 40, Uptown Funk will still be top 10, maybe even top 5.
In fact I reckon Uptown Funk is going to become a million seller in early 2015.