The judges (particularly JLo) and the show have a vested interest in Jena. They want to appear like they knew what they were doing when they saved her from elimination before the lives even started. If Jena wins this thing (and don't think she can't) they will look like the savvy, hip, talent-spotters that the show feels it has been lacking since Cowell left. On a lesser note, they would also have liked Sam to have resonated more with the fans but that just isn't happening.
Personally, while I have my preferences, I don't mind that the show has become more talent show-y. In contrast with The Voice, which tends to choose far more experienced singers, Idol has always had something of an American Dream feel to it. I definitely feel more arc to the development of the contestants on Idol, which is a reflection that it is a competition for the singers and not the coaches. I like The Voice but I recognize that it is a very different format. Comparisons, in my opinion, are not entirely appropriate.
