doesn't value him? Before the Gurley deal they had already offered him 15mil per year, nearly twice what the next highest back made. Bell has been suspended twice and missed significant portions of multiple seasons to injury. He's also been in the league two years longer than Gurley, which is a lot of wear and tear for a running back. Sure he's the best back in football when he's on the field, but if he's only on the field half the time how much value is he really adding? I would be far more sympathetic to his cause if he were the same age as Gurley and didn't have the lengthy history of missing games. But he does have those things, so screw him.
Guarantees are what matters in the NFL not average pay.
And he has alot of "wear and tear" because the Steelers give him 450 carries a year because he's extremely valuable to their offense.
So why report to a team that you're extremely valuable too for another year of 450 carries (thus significantly increasing your "wear and tear" and further depreciating your value) if they won't even pay you that value and are just gonna ride you till you collapse then low ball you again next year?
What??? Literally every single working person in the world is trying to get paid their worth; there are countless examples of people doing so in a childish fashion. Holding out and being unprofessional is a classic, common example of this. That statement in itself is silly. There are plenty of players, RBs included, who are not getting what they "deserve" and none of them are doing this.
What other leverage does he have aside from not showing up? I'm sure in his mind that the only way the Steelers will see what his actual value to them is for them to see what their offense looks like without him on the field.
And you cant really compare him to other real world examples here because his employer is basically holding his rights hostage and he has the chance to get his leg destroyed everyplay which would completely torpedo his market value (and he has no guarantees beyond this year.)
He could easily go elsewhere and make what he thinks his fair value is.