I won't read through three screens to see if anyone else said this, but no, the ONLY playoff game during the SB years that wasn't sold out was the Oilers game.
As for this weekend, I offered to take some ex-pat relatives, for free (to them), in heated seats, and it was a universal "no." Not because of the team or weather; they just wanted to be with more family. Sometimes sports take a back seat, and sometimes sports should.