Overall, I think you can say that both sides have failed multiple times during the playoffs.
Here is brief summary (info from NFL.com)
2002 - Jets 41, Colts 0
Both sides failed during this game. Defense gave up 180 yards on the ground, gave up 41, but maybe the more telling is that they allowed the Jets to score on 4 of 5 Red zone trips. Offense only got to the red zone twice coming up empty both times. Peyton throws two picks and only 124 yards coming from 14 passes.
2003 - New England 24, Colts 14
I think this one is clearly on the offense. Defense held the Patriots to 5 field goals and 1 pass touchdown. There were no Red Zone visits by NE. They held NE to 112 yards on the ground at a 3.5 ypc and 237 through the air. If this year's defense could hold averages like that, we might be undefeated. Offense, obivously Peyton throwing 4 ints didn't help, but also there were no Red Zone visits at all by this High Octane offense. Not acceptable in the playoffs. The O-Line also gave up 4 sacks. The sad part is that the Colts still had a chance if Edge doesn't fumble.
2004 - New England 20, Colts 3
Again, both sides can shoulder some blame here. Defense allows over 200 yards rushing at 5.4 ypc, that cannot happen in the playoffs. The D did sack Brady 3 times on a positive note, too bad we can't get points for those . The offense never got in the Red Zone and only produced one field goal. They also had two fumbles lost... not much more to say.
2005 - Pittsburg 21, Colts 18
I think this one, I put on the Offense. Defense, sure they give up 3 TDs, but they held the Steelers to 112 yards at 2.9 ypc and 183 yards passing. They sacked Ben twice and caused what should have been either the game tying or wining fumble. If Ben doesn't make the shoestring tackle, defense scores and wins the game. Offense, there were only two trips to the Red zone, of which they score once. The O-line allowed 5 sacks.
There, so much for being brief
Overall, IMO, the offense has screwed this team more in the playoffs. If they would have performed like they had in the regular season, they would be 3-1 in those games instead of 0-4. The only loss would have been the Jets game, unless they could have(and probably should have) scored more than the 41 points. However, the D cannot allow 41 points in the playoffs.
I think the problem this year will be defense however, because the defense cannot stop the run, the offense will sit on the sideline most of the game. Unfortunately, the best offense in the NFL will not be a determining factor due to the time it has on the field.
The only hope we have is that we get the ball first, score, then the opposing team fumbles the kick return, we score again. Another turnover by the other team and we score again. Of course, I'm not sure that a 21 point cushion is enough, if the team has any kind of running game, they will just pound our defense and keep the offense on the sidelines.
I'm really hoping that it doesn't play out like that b/c I'm really tired of the playoff loses. I think the colts need to make a statement vs Miami, they need the win and hope that the ravens lose. I think a bye helps the defense b/c we should get Sanders back. Not that one man can save this defense, but at least they seem to play better with him in there.
I'm ready for Sunday.