If in fact there wasn't enough evidence to convict Michael Jackson, there wasn't enough evidence to convict anyone else.

If there was enough evidence to convict Michael Jackson, the jury got it wrong. Juries do get things wrong, both ways.

But the jury heard all the evidence and saw all the witnesses, and the rest of us didn't. The fact they came to a unanimous verdict can't just be pushed aside. If it had just been the celebrity factor you'd have expected a hung jury, or a majority verdict (do they have those in the States?)