Yeah they are pretty even imo. Both started their careers with the Bills, both had two 1000 yard seasons with the Bills (I think, might have to fact check), but McGahee was here for only 3 years, Henry 4 years. McCoy 4 years as well, and I believe he may have been more productive overall than either Henry / Mcgahee during his time, definitely in terms of YPC. That said, Anthony Lynn’s system was also VERY RB friendly (see Mike Gillislee and Karlos Williams)