I'm pleasantly surprised. I thought it was going to be another "grades don't count, Kerry is smarter anyway" thing. Leno did a routine along those lines last night. Infuriating.
Give the Boston Globe its due, no matter their overarching biases they've dug up more dirt on Kerry over the years than any other paper. Theres a bit of a game between the Globe and the Boston Herald to see who can get the latest dirt on Kennedy and Kerry, the Globe usually wins. A lot of the groundwork for Kerry stories in the campaign came from old Globe articles.
As for Yale grades, it means nothing to me and clearly it hasnt hurt either man. I'd like to see more presidential canidates not connected to the ivy league old boy network. Since the 1940s the only non-ivy leaguers were Ike, LBJ, Carter and Reagan. Nixon is a toss up since Duke is essentially an ivy school.
Consider the likely 2008 canidates (thus far)
Ivy Leaguers - Hillary Clinton, Mitt Romney, Bill Frist, John Kerry
Non Ivy - John Mccain, John Edwards, Condi Rice, Newt Gingrich, Evan Bayh and believe it or not Jeb Bush!