The Ravens have played some bad offenses in their six games but they've also played the 3rd and 9th overall offenses in total yards. They rank 13th in total defense right now. They are among a group from 13-20 that are only 10 yards apart in total yards allowed. 330 seems to be the break point right now in yards allowed for the top defenses. Given they were gashed for what seemed like 3 straight games, that's encouraging overall to look at.
Alternately, their defensive DVOA is 24th. But their total team DVOA is 6th (though they are 8th in DAVE which factors in preseason rankings and projections). The Ravens would have 4 more games against top ten DVOA teams as of today. This weeks Bengals game gave them a 7% improvement on their defensive DVOA as well. It'll be interesting because the Ravens schedule is so top heavy down the stretch, as results weight the overall rankings more as the season goes on, any drop off from Miami, Pitt, Cin maybe offset by playing 5 total games against the remaining 9 current top DVOA teams.