Could you provide a link to 1 school that specifically said they, being the ad com, only look at science/math prereq GPA as part of the basis of their determination of student selection? I wasn't aware ad coms shared selection criteria.
As far as general eligibility, here is a copy-paste from one of the schools I applied (and
the link):
Since they track both the PharmCAS GPA and the Science GPA separately that leads me to assume that they take both of them into account. The regular PharmCAS GPA takes
ALL courses into account. Also I'd be careful of assuming anything at all from admissions pages and wouldn't believe it unless they specifically state that: "The ad com will only look at X, Y, Z components of your cGPA as part of the decision making process". Even if they post certain averages that doesn't necessarily mean that is all they look at. Also note that this is
VERY different from merely determining eligibility to the program, in which case, yes the only thing that is looked at are the prereqs. I don't believe that was the question the OP was asking, however, and statements to the contrary could be misleading and confusing.