Al Nassr can win the SPL but AL Hilal, Al Ahli and Al Ittihad want to be champions. The best team will win the SPL, they do not need superstars to win but they must want to win every game and fight for every ball chance they get. If they score goals like Felix and Cristiano they have a chance.
Sometimes you don't need superstars to shine as a team, just like you said, they have many extremely good players in all roles, that alone is enough to make a team unstoppable. Just have players that are good in their different positions and you're good to go. Last season Al Littihad were so good that they beat both Al Hilal and Al Nassr, infact there was even this very match that Al Nassr were leading with 2 - 0 but at the end, it ended in Al Littihad winning 3 - 2 on the night.