It all depends how fast you want to pull it.
I've never used either of those trucks, but I used to pull 135,000lbs w/ a 237hp Mack.
I have a 270hp L10 cummins now, it'll never outrun my 427 Mack, but it'll cheerfully handle anything road legal.
Hp is mostly about how fast you can get the work done, not what you can do.