In reply to necromancer85:
C&A traverse is 7a but then you have to reverse the V4 crack problem into the roof, this is pretty tricky. There are acouple of methods (I find my high foot and cut loose method the easiest/shortest). Not sure of grade for those moves. Then you do the bulb from this crack which has been conformed at 8a+.
That should be justification for the proposed grade. Additionally, the last Bulb move feels more difficult than the last move of Real Keelhaul, which is certainly 8b (and a hard one IMO). The holds are better but the move is more strenuous. After all those previous moves it is really draining.