I dont think there was malice driving how these events unfolded. There were protests at other embassies such as Cairo that seem to have been linked with the video. An assumption was made, that proved incorrect with fatal circumstances, and that alone makes it important to investigate and understand, so similar errors are not made in the future. The security at the embassy is an important issue to understand. There has been so many stories of what was and wasn't available to defend against the protesters, that needs to be cleared up, and lessons learned from the incident.
I do disagree this was a "Vote for me exercise" Obama has not played up his role in the final confrontation with Osama. Yes he has mentioned it, but I only ever recall that being in the context of direct questions from interviewers. Obama extended an invitation to GWB to come to Washington to make a joint statement that night. Unfortunately GWB decided to continue his silence on political matters and declined.