Got a 2.5i and a 3.6R in the family and the 3.6R is way different power wise. BTW, the 2.5i was recently bought used because the previous owner got the wife knocked up and decided an outback was a compromise. Had tint, leather and remote start added. Nice.
Both 2010's are loved. We will probably keep them 8 years or more. I think you are just seeing cars that would have gotten traded after 1 year no matter what they were.