For the most part, it was a rehash of the "Bush lied" argument, and then he ended up essentially arguing that we would be better off if we had left Saddam Hussein alone.
That position will not play well with swing voters.
I hope you are right. But I don't think so, unless Bush responds skillfully. Kerry got back into the game on Iraq, after being out of the game, and in fact so inept was he, that he was squirting blood all over the carpet over it. Now his self inflicted cuts have been potentially stiched up.