Missed Vernon Davis the last few years? (Of course you have, your a Steelers fan.) Stated by the talking heads as the best blocking tight end, certainly the fastest and most athletic tight end. Has actually had a 13 TD season, and did so without the benefit of good QB, let alone Tom Brady and the pass happy Patriots.
Gronkowski is having a VERY good season, but he is not the best tightend in the game. Not even *might*.