In a recent Tweet, the star wrote, "Maybe the winner of The X Factor USA this yr (year) should compete with (the) winner of The Voice + (American) Idol in a super final. Just a thought. I'd be up for it."
However, Levine, who sits on The Voice's judging panel, is less than impressed with Cowell's big plan, and fears the quality of his series would suffer if it was pitted against its competitors.
He tells Access Hollywood, "Simonâ€™s just so clever. Heâ€™s so hell bent on competing with other shows. Weâ€™re not really interested in a way... Thatâ€™s kind of a cool idea, actually, but Iâ€™m not so sure weâ€™re totally interested in what everyone else is doing.
"Weâ€™re just kind of worrying about what we do â€˜cause we all know the more we worry about everybody else, the more the quality of what youâ€™re doing tends to suffer. So, we want to just do what we do."