The BiS discussed in the warrior BiS thread (just switch the axe to the i270 sword) is slightly better than that while maintaining 1.5k more hp (only 1 slaying piece): http://ffxiv.ariyala.com/WCKW.

The only advantage your set has is that it doesn't require any a12s drop, so you can use it to progress on a12s if your group takes a while and you can afford the tomestone.