While the polearm does have a very nice proc, it's "generally" considered a DPS increase to use the heroic staff from Yor'sajh, purely because of the massive amount of mastery on the staff.
It comes down to personal preference, but overall, the staff is a bigger DPS increase than the polearm from normal madness.
EDIT: Also, your signature is probably too big and violates the signature/avatar rules of the forum, you might wanna resize it or risk an infraction.
For Madness you're better of using the staff from Yor'sahj. Reason being is Kiril's proc is uncontrollable and it's completely possible to waste an entire proc at certain points in the fight.