Can the Ravens Defense Stop the Patriots?

The Ravens secondary has been the weak part of the team since the beginning of the season.  The pass rush (and by extension, the run defense) has masked some of the back end's deficiencies... but defending the Patriots' fourth ranked offense (by DVOA) will pose a sizable challenge.  New England certainly has a number of offensive weapons, but can the Ravens offer enough resistance to give their offense a chance to win?  I went back to the tape to find some answers.