I had JUST got done playing the Ravens, and I'll tell you what, I found that with Willie, he has a lot of success with the Iso's and Dive running plays up the gut. It's good for 5-6 yards at a clip if the blocker does his job. And once you get a little success with that, then it opens up the sweep and counter options after that.
I just completely decimated Baltimore, 66-14. Willie Parker had 108 yards on 28 carries, two rushing TDs and even caught for a TD. I intercepted that Flacco dude like 5 times (three by Polamalu and he returned 2 for TDs himself) and made him fumble twice (both of which I recovered) hence why there was such a lopsided score, I was up 31-0 before even having 100 yards of total offense at one point.