Even though Karen didn't come out and say "I think this, I think that..." she made her point.
She indicated that Alesha was her favourite without saying "I want Alesha to win". I agree with her. Alesha is my favourite too but you never know what the voters will do. You just have to make your vote(s) and hope!! And from "all he had to do was nail the choreography" it was pretty clear that she was saying all Matt needed to do was carry on dancing until the music finished and everyone would be impressed! She managed to say it without being malicious!
Karen can hardly go on there ready to slag everyone off. If she was an actual judge on the programme I think she would be more forthcoming with her opinions, like she is on ITT when analysing the performances, but on BBC breakfast it wasn't her place.