Yeah, I love Christina but I wasn't feeling this rendition. There was no real connection between the two. Of course sometimes down to the fact there's no rehearsal the guests don't have the time to gel with the contestants but if the contestants bring their A game then it almost always works..., like in the case of Leona and Take That and Beyonce and Alexandra.., Leona completely outshone the Take That boys her year which IMO is exactly what the contestants should be able to do while although Beyonce was obviously better than Alex, Alex at least held her own. The guests are seasoned professionals after all so are used to bringing it at the last minute.

Rebecca and Christina's duet failed because Rebecca was dead as a door knob throughout and gave Christina virtually nothing to work with and also because Christina didn't even try to restrain or reign herself in the slightest to match Rebecca's obviously smaller scale vocals..., though she shouldn't have to reduce herself if Rebecca (in this case) is simply not even remotely bringing it.

They're both to blame which is why Cher and Will.i.Am worked so well.., Cher believed in herself and performed like Will.i.Am's equal not his fan so their energies matched perfectly. In fact I'm gonna go as far as to say Cher was the only act who brought their A game last night, shouldn't have gone and her absence has left the final weaker as a result.