When the Saints won it they took a huge risk opening the second half with an onside kick that denied Peyton Manning an extra possession.
I'm anticipating a conservative approach early on since this year's teams both have excellent defenses and I expect it to be a very tight game. On paper the Niners seem to have an edge, but the Raven's D can negate that. So there's a lot riding on the performance of both quarterbacks and without turnovers it should go right down to the wire, with both coaches being satisfied if the score is close going into the fourth quarter.
Don't know what the point spread is, but I doubt it's much either way and I won't be surprised if the outcome is determined by field goals.