It's odd. Smackdown is the show of opportunity, Shane is the one who came back to give people who wouldn't normally get an opportunity that opportunity yet there is only one person out of five that isn't either a former World Champion or hasnt competed for it (to the best of my knowledge).
Raw however gives Balor (on his debut), Zayn, Owens, Cesaro, Rusev their first ever chance at the top title race