Thanks BDZ....fwiw my 30% spitball for the overall trial was based on the Crestor arm showing about a 60% RRR and then the Lipitor's arm showing a negligible RRR so as to be deemed statistically insignificant (for that arm only). 

If things were to play out in this fashion could a lack of success only in the Lipitor arm torpedo mind blowing success in the Crestor arm?