Talent is great, but so is health this late in season

Just making it to the NFL's conference championship round is a feat unto itself.

Making it there healthy? It's just about impossible.

That's likely to play a big role in who ends up in the Super Bowl after this weekend's games when Jim Harbaugh leads the San Francisco 49ers into battle against the Atlanta Falcons in the NFC title game, and his brother John tries to lead the Baltimore Ravens past the New England Patriots in the AFC.