Round three of Ravens-Steelers has gotten a little harder for Pittsburgh

This season for the Pittsburgh Steelers can be summed up via a reader comment that I already have “borrowed” for the Week 15 power rankings. Harbaughs 3, Tomlin 0. Jim and John Harbaugh have swept Tomlin’s Steelers, with three wins and a combined score of 78-30.  That’s an average margin of 16 points per game.…