Think about something. Brady, Montana, Elway, Manning, Rodgers, Marino etc. These are the names of the greatest QBs of all time. Do you honestly think there was any question about their roster spots in their preseason games? Regardless if you want to admit it or not, Tomlin kmows how to coach football. He has won 2 SBs. He knows how to spot talent. I mean he has the best WR and one of, if not the, best RB in the NFL. The Steelers are a storied franchise that has produced a lot of HoF talent.
Now do you honestly believe that they would whiff on the greatest NFL player of all time? What are the chances of that? The truly special guys, the future HoFers show it early. You can just see it. Their play jumps out at you and NFL coaches notice. If Dobbs was as good as you want him to be, then he would have won the backup job hands down. Now, here is another situation. It appears that you want Dobbs on another team, so it will be interesting to see how quickly and by whom he gets picked up by.