Yeah the pats won with Antonio Smith at RB and Cory Dillon on the downside of his career..
And Peyton is out because he was hurt and couldn't move a offense dependent on him.. They still didn't have a bad run game with a nobody in the back field. .
I'm not taking about one instance, but his entire career. The reason Peyton Manning loses during playoffs is lack of balance in the offense and that's why he only has won one super bowl. A FA or off the street signing will get you through some games in regular season but when it matters the most during the play offs it doesn't work the same when the talent level on the other side is even. Usually the teams that make the playoffs and make run have workhorse RB with 1,000 + yds.
I disagree with the theory that you can put any RB behind a good OL, If you want to win playoff games consistently, and a SB you need a RB like Stewart, Lynch , AP...etc that can run inside, outside, screens and YAC to keep your offense on schedule. Usually in the playoffs games it comes down to couple of big plays or grinding down the clock.
If AP had Teddy Bridgewater with him early on his career, the Vikings would have been a top 10 team.