Hi Leewumonica,
Welcome to the boards. Both schools are great and put out great grads. Generally speaking, I do think they put out a very different type of student.
A good way for you and your son to gauge would be to go to http://www.behance.net and in the search criteria put “Industrial Design” in the Creative field and Pratt or University of Cincinnati in the school criteria. Most of the work on Behance is from students or recent-ish grads
This is the search results for Pratt
This is the search results for DAAP
If you want to take it to the next level, lots of people will list in their portfolio where they are currently employed which might help your son get a sense of what companies grads from each school tend to end up in.
What time of the semester did he visit? There’s definitely more intense times during the semester were almost everyone looks like they were going to loose it 
DAAP is not perfect and like every school it has it’s issues. But it’s a world class ID program that does a great job preparing students to enter the workforce, so the work load and expectations are high and it’s not everyone’s cup of tea.