Home field advantage matters the least in this round.
Steelers are a cold weather team, as are Broncos. Elevation might help Broncos, and fan noise when Steelers are on offense. Dunno about Seattle/Carolina. Those two teams probably get less publicity than anyone else in the NFC. The AFC game is between teams that have a combined 11 Super Bowl appearances and 6 wins, while the NFC is between teams that have one appearance and zero wins. (that's close, but I don't follow any of these teams closely, let me know if I'm off)
Correct, thats why Im picking both road teams..