Sherz, two different rifles.
Primary difference is the redwolf is a newer version of the airwolf with the expected updates. I have redwolfs, brilliant rifles. And I agree with trompis that the .177 with slugs is very good, but would have to somewhat disagree with trompis that the 3 settings are not sufficient. I use mine to shoot many different disciplines / events, usually with solid results from the rifles. There is an aftermarket board you can get with more programming options, or you can get a daystate programmer to change the settings in the redwolf board to your liking. Very tuneable.
As to the airwolf, a good friend here in town shoots an airwolf, won the most recent field target match here and is always in competition for a win with it.