bayWRX, the Unichip should be less sensitive to full boosting with partial throttle relative to the MBC. With the MBC, I can just engage throttle 1/4 way and the boost will slowly build up to full boost level. Unichip keeps the boost at certain level and not allow full boost. Now, you are correct, seems like if you have the throttle past 65%, Unichip still allows full boost level to be obtained.
There is a post already in the Factory Forced Induction forum titled "Boost with Unichip". Please go there for this sort of discussion. Many more experts is engaged in that post.