Assuming DT plays, and Sean Davis doesn't, the Steelers will start ONE DB who is over 6' (SS) and Davis' possible replacements are both well under 6'. They DO have a 6'2 rookie 3rd round CB on the roster, but he's currently listed a 3rd string on the Steelers' web site.I was surprised that they would even go back to the fire zone coverage (albeit a modified version) after LeBeau left but they did, and also did it against Brady.
The question to me is if their DB's are of the right type to execute a man to man coverage scheme. Can any of them be left on an island?
So with Gordon, Thomas, and Meyers the Pats will have a significant size advantage over the Steeler CB's and FS's if they choose to play man in this game. Myers is a particular mismatch since the starting slot corner is listed at 5'9. Might be something Josh might want to exploit if he wants to give JE a breather.
So look for the Pats to try and exploit those kinds of mismatches if the Steelers are playing man and the route designs aren't getting the WR's separation.