Firstly, what does this have to do with their friendship? Secondly, if you're implying that Jean is somehow at a lower status than Storm, think again. If and when she chooses to take a leadership role - I would even wager to take Xavier's place - she would do so with ease. She's beneath no one; not Storm, not Emma, not Magneto, and not Xavier, as he himself has made clear throughout the years. Jean was his first student and the first of his students that he entrusted with one of his biggest covert operations.
It's also important to remember that after relinquishing her position on the Quiet Council, she was invited back and turned down the offer to found and form the new team.
And again, this is why I think they would work perfectly together. They have the history to prove it.