Warner is now 8-2 in the playoffs (6-0 in home playoff games), and has played spectacularly well in many playoff games. He will join Craig Morton (1970 Cowboys and 1977 Broncos) as the only QB to start a Super Bowls for two different teams. Before the Super Bowl, Norm Van Brocklin was a platoon quarterback for the champion 1951 Rams, and starter for the 1960 Eagles. Earl Morrall also started for the 1968 Colts, was backup on the 1970 Colts, was a backup that started and won several games for the 1972 Dolphins, and was a backup for the 1973 Dolphins.
Warner joins Terry Bradshaw, Roger Staubauch, Joe Montana, John Elway, Troy Aikman, and Tom Brady as the only quarterbacks to start at least three Super Bowls. Those quarterbacks are Hall of Fame QBs--is Warner? That's hard to say--he has had five great seasons, but was often irrelevant in other seasons.
Fitzgerald's 2008 post-season may be the greatest post-season domination by a pass catcher ever. Jerry Rice is the greatest playoff WR ever (in four Super Bowls, he had 33 receptions, 589 yards, and eight touchdowns) and his best single playoff run was probably 1988, when in three games he had 21 catches for 409 yards, three rushes for 29 yards, and six touchdowns. Like Rice, Fitzgerald is aided by spectacular quarterback play. But Rice was usually a superstar guiding a juggernaut, while Fitzgerald is a superstar guiding a surprise 9-7 team to the Super Bowl. Fitzgerald's games of 6-101-1, 8-166-1, and 9-152-3 have been a joyful and incredible run.
Ken Stabler had some very good seasons and was a pretty good playoff quarterback (seven wins, five 100+ rating games, five multi-touchdown games), and has some memorable clutch playoff moments, but was 1-4 in AFC Championship games. That's a lot like McNabb, but when when Stabler did get to the Super Bowl, he led the Raiders to a championship.
McNabb was often off-target against the Cardinals, missing open receivers high, low, behind, and in front. Despite leading the team from down 24-6 to a 25-24 fourth-quarter lead, he has added to his reputation as a choker, a quarterback that doesn't come through in the "clutch." Winning a Super Bowl would, I believe, cement a Hall of Fame career for McNabb. One wonders, however, whether this was his last best shot.