Which is easier? I have heard different things from different people. Some told me Diffe Q was easy and actually fun, and I've been told Calc III is the easiest calc class.
There's actually two different Diff Eq. classes. One, which I think is 265, is a little easier and another 267 which is a little harder because it covers LaPlace transforms. I know most engineering majors require 267 while other majors only require 265. I still think Diff Eq was easier because my professor spoke English.
When I was in school 267 was DiffEq (and required for engineers), but 265 was calc 3.