Looking at the trailers on Forrest Rivers web site it looks like the Alpha Wolf is a higher end level of trailer. One of the features mentioned is an extreme weather package meaning it is probably a 4 season trailer with a winter package of some sort. The Grey Wolf doesn't mention anything to indicate it is a 4 season trailer and looks like it is probably an midgrade or lower end trailer.
Also noticed when searching for prices, both trailers are running $8000 - $10000 difference in price at the same dealership. Pictures show aluminum siding on the Grey Wolf and fiberglass on the Alpha Wolf.
