I currently use blood tap and put out pretty good numbers but the overwhelming majority of dks I see on Worldoflogs are using runic corruption. Thinking of it logically bloodtap only gives u death runes back which in turn gives more scourge strikes our most powerful attack. On the hand hand Runic Corruption gives u blood,frost and unholy runes at the same rate u would be getting death runes from BT. I dont see why getting more festerting strikes over getting more scourge strikes is the choice for 90% of dks.
Please enlighten me as to what Im missing.