Here are lists of the cumulative scoring by quarter for the 49ers' 15 playoff games in the 5 seasons in which they’ve won the Super Bowl.

For the three 1981 playoff games:
49ers
1st: 21
2nd: 37
3rd: 7
4th: 27
Opposition
1st: 17
2nd: 10
3rd: 21
4th: 24
The 49ers scored 92 points in the 3 games, and their opponents scored 72 points.

For the three 1984 playoff games:
49ers
1st: 24
2nd: 31
3rd: 17
4th: 10
Opposition
1st: 10
2nd: 16
3rd: 0
4th: 0
The 49ers scored 82 points in the 3 games, and their opponents scored 26 points, none of them in the second half.

For the three 1988 playoff games:
49ers
1st: 17
2nd: 21
3rd: 10
4th: 34
Opposition
1st: 3
2nd: 6
3rd: 16
4th: 3
The 49ers scored 82 points in the 3 games, and their opponents scored 28, including only 12 in the 1st, 2nd, and 4th quarter combined.

For the three 1989 playoff games:
49ers
1st: 20
2nd: 55
3rd: 17
4th: 34
Opposition
1st: 9
2nd: 0
3rd: 10
4th: 7
The 49ers scored 126 points in the 3 games, and their opponents scored 26 points.

For the 3 1994 playoff games:
49ers
1st: 42
2nd: 47
3rd: 28
4th: 14
Opposition
1st: 17
2nd: 10
3rd: 15
4th: 27
The 49ers scored 131 points in the 3 games, and their opponents scored 69 points.

Compare to the scoring by quarter for the first two 2013 playoff games:
49ers
1st:7
2nd: 31
3rd: 14
4th: 21
Opposition
1st: 24
2nd: 21
3rd: 3
4th: 7

The 49ers scored 73 points, the opposition scored 55 points. As in 1984, '88, and '89, so far the Niners have been very good at distancing themselves from their opponents in the second half, scoring lots of points without giving up many. If the trend continues, it's hard to see them losing to the Ravens. And in case the Ravens get out to an early lead, well, obviously the Niners overcame that vs. Green Bay and Atlanta.