depends on the drilling. These balls are very, very similar. The BP goes a little longer and snaps harder. However the WCPP is more consistent and predictable. These balls are very interchangeable. I play the exact same line with them, and grab the other if carry isn't there. Last week shot a 202 with the BP, switch to the WCPP, 276. This week, 196 with the WCPP switch to the BP 279.
If your looking for backend and length, I would lean towards the BP, however, if you bowl on tougher conditions, the predictability of the WCPP would be my choice.