No. Of course not. How many times do I need to type "Roethlisberger is better than Tannehill"? That is at least the third time in this conversation. The only question is how much? The end result (i.e. offense efficiency, points scored, team record, playoff appearances, etc) clearly says that the Steelers >>>>>>>>>>>>>> Dolphins. IMO, there is still plenty of room for debate for how much of that is QB and how much is the rest of the team, coaching staff, etc.
IMO, if you put a young Tannehill in place of a young Roethlisberger, there'd be very little difference between the two teams. Roethlisberger was simply not asked to do very much.
In his third season, Roethlisberger's pass attempts went way up (from under 300 in his first two years to 469). The result was a passer rating of 75 and a record of 7-8 despite having a top 10 defense and running game. That is worse than Tannehill's rookie year.
The later Roethlisberger has proven to be a much more effective passer and an ability to be a focal point of a very good team. I would love for Tannehill to have the same chance to demonstrate that. I have seen nothing in Tannehill's play that would suggest he cannot. Would he be as effective Roethlisberger? Don't know. Certainly wouldn't guarantee that he would because he hasn't done it, Roethlisberger deserves the benefit of the doubt and the nod in his favor.
The only thing I objected to is the idea that there is no room for that discussion. Doesn't seem unreasonable to me.
Let me add that I enjoy the back and forth with a knowledgable poster like you. We can disagree without being disagreeable.