Hmm, that doesn't bode well for Clinton. Part of the key in mass advertising is to get the public's attention, take a death grip on it, and never let go. It sounds as though Clinton's slower advertisements are falling into the classic trap of lacking energy, while Obama's emphasize the charisma of his campaign. The speed, like you said, doesn't give the viewer the chance to look away; Clinton's slower ads sound as if they induce yawning.
Also, a 2-to-1 advantage in quantity isn't always a good thing when the quality is poorer. Just as you would notice the one red brick in the middle of a gray wall, Clinton's advertisements run the risk of blurring together while Obama's stand out.
Very intriguing. Clinton just can't take advantage of her resources...