It would be the coup de grace if Amadinijad were to loose in Iran too (I know the alternative isn’t exaclte “conservative” or pro-west, but he’s be better than the mad-man who called for the destruction of Israel, and war with the West).
2ndly you also forgot that Netanyahu (and co-parties) won in Israel too!!
While I also would like to see Ahmadinejad gone and shamed, Musavi (or any other mullah sockpuppet) wouldn’t be any better, and in a certain way even worse.
With Ahmadinejad an Israeli strike or other sanctions would be more palatable... “kinder, gentler” types ala Musavi will play Obama and the appeasers directly in their hands (which is exactly why they are propped up). This will make the position of anti-regime Westerners and Iranians decidedly more difficult. Everyone will gush and fawn about a “President” that isn’t a batsh*t crazy midget, and overlook that the pro-terrorist, pro-proliferation policies will continue without the scrutiny.
Regardless of that, Musavi is strange type of “moderate”. He was already in office under Khomeini, during the Iran-Iraq war. Some of the greatest atrocities and crimes were committed under him.