A Democratic Exodus, or a Little Media Spin?

The two high-profile retirement announcements of CT Senator Dodd and ND Senator Dorgan have got the Washington media establishment all aflutter about a Democratic exodus. But the Washington Monthly is one of the few media outlets providing context:

The Washington Monthly: "Quick quiz: which party has more Senate retirements so far this campaign cycle, Democrats or Republicans? Follow-up question: which party has more House retirements so far this campaign cycle, Democrats or Republicans?"

ANSWER
Senate: 6 Rs, 2 Ds
House: 14 Rs, 10 Ds

Who has an exodus?