Lady Sov is at a MASSIVE disadvantage, when compared to Cher. Cher has been on XFactor, Sov hasn't. Cher already has a MASSIVE marketing campaign going for her. The fact that she is regularly seen in newspapers is testament to this.
Sov's big chance came when she went on Big Brother. When she came out of it, she should've done "something". But she didn't. She missed a golden opportunity. In contrast, I remember when Pete Burns when into Big Brother, he came out of the house and immediately released a single, which promptly made No.1.