What I most recall about Jennings with the Vikes was the first good game he had with Cassel vs PIT (4/3/92/2).
He's had some others, including this week (vs PHI): 13/11/163/1.
Also with Cassel he's gone:
vs CAR 10/6/34/0
vs CHI 9/7/78/1
@Bal 10/5/53/0
There are 3 very good to excellent weeks vs some shaky defenses (which PIT was at the time), and two mediocre but not killer games vs two potentially good defenses - this is pretty startable stuff.
I've viewed @ Cincy as a bad matchup all year long for just about everything though, I really don't know if this is ideal for championship week.