Most colleges do not give out a GPA needed. They do list a ACT/SAT score needed and what percent of incoming freshman are in the top 10% of their HS grad class.
at UofM
ACT 27-30
Top 10%:92%
Uof P
ACT 24-29
Top 10% 43%
University of Pittsburgh is going to be easier to get into. Big difference in the schools.