I think JTB compares pretty well with Troy Smith. Troy's arm was stronger. JTB is a better runner. But they're both good athletes. Their NFL careers are likely comparable. I believe Troy would still be a QB (likely a backup) in the league IF he hadn't gotten deathly sick and IF he really wanted to put the work in to play football at that level. I think he really likes his life like it is now.
JTB received a lot of the blame for offense, especially after the Clemson game. I think the evaluation of JTB shouldn't be clouded by that fiasco.
Case in point: Troy Smith, the Heisman Trophy winner looked just as pedestrian, if not more so, against Florida in 2006. Yet, we don't seem to blame Troy for that failure like we blame. It doesn't mar his legacy overall. Florida was better and our offensive gameplan was crap and our line was overmatched in 2006. Clemson was better and our offensive gameplan was crap and our line was overmatched in 2016.
2017 will tell us a lot about how to view JTB's legacy. Nothing will change the fact that he's a proven leader and a winner. We don't win a national championship without him in 2014. However, will he go down as one of, if not THE greatest Ohio State QBs? This season will tell whether JTB's legacy will be VERY GOOD or GREAT.
I'm pulling for great. I think that's what we'll see.