They are rated for how difficult they are to play solo and how difficult they are to play coop (generally different) on each character sheet. I don't have them handy but they may be available online or I am sure someone else will chime in.
Hah! I printed out the rulebook and character reference sheets to start learning the game and didn't even notice those ratings on them. Seems like Patches it is.
Now, it makes me wonder about the other available gearlocs. Wanted to get Nugget certainly, but decided given the cost of the game, I really should make sure I'm going to like it and play it enough to justify the extra expense. Worth it or not, it is a lot of money for a game. I'm hopeful that it will definitely be worth it for me.
Thanks for the help & comments.