I think you hit it on the head. PFS is a game geared towards people that like games like OOTP baseball and so on. where actual gameplay isnt their number one interest. They like whole management aspect. If you are into nuts and bolts calling plays, choosing coverages, when to blitz, who to double team etc, PFS probably isnt for you.
I know Management games have a huge fanbase. I tried OOTP and PFS and just seemed like the actual game, game decisions and playing a season took a big back seat to managing a team or a league and seeing how many seasons could get played. Again, this is a personal choice. Nothing wrong at all with that. I just prefer a coaching sim. A basic Salary cap and some league management tools are plenty for me