Of all the teams in the AFC's Bracket this year I think Baltimore is the best match up for Indianapolis.
You could make an argument for Houston, but Houston is still a lot better on Paper than Indianapolis, and if they ever figure out how to win games consistently they could challenge teams like New England and Baltimore for top dawg of the American Football Conference.
I don't expect Indianapolis to win this game. They're playing on the road, in a place where the general population loathes the organization, so the Raven fans will be rabid this weekend and home field advantage will be in full effect. Indianapolis has to fight the elements, and even though everyone plays on the same field, Baltimore plays in the elements much more often. This game will be interesting to watch, because while Manning was playing in Indianapolis, losing to Baltimore was never really a significant fear. Manning owned Baltimore for a # of years here in Indianapolis, whether it was playoff games or regular season. It should be interesting to see what Andy Luck does and if he can limit mistakes against a historically solid defense.
As with any other Colt game this year, if the Defense can stop the run, and the offense can limit turnovers, they have a good chance to win this game. If they do somehow slide out of Baltimore after this wildcard round however, I see them getting thoroughly exposed by whichever team they face in the divisional round. Indy has played above their talent this year, and combining that with a relatively weak schedule (although Indianapolis did beat 3 playoff teams this year), I don't expect a deep playoff run.