Hunter: Deciding if i should break T2

Im trying to decide whether i should break t2 set. Replacing t2 head shoulders and belt for t2.5 head, mantle of wicked revenge, and osi bindings. Already swapped godslayer ring and signet ring.

according to sixtyupgrades com it does more damage but i doubt it takes expose weakness into account. My own theorycrafting shows its very close comparrison but T2 would win because of expose weakness. i just dont know what source to trust.

was going for the hybrid bis setup. anyone having similar predicament?