All the sports that are "judged" like this are kinda bogus imo. There are no "hard" performance guidelines like a race or a distance where there is a clear winner. Unfortunately there's no other way I can think of to evaluate these sports like gymnastics, diving, etc. The participants know this going in that it may not go their way depending on how a particular judge or group of judges view something. But being that most the judges aren't american I think the Russian chick's probably just pissed cause she got beat and cause she's beat the americans in other competitions.
How bout Paul Hamm who was awarded the all around Gold. Then told a couple days later that they f'ed up and someone else should have won it based on difficulty of a routine being judged wrong. But go ahead and keep it even though you really didn't win. Talk about an empty win...
The whole system is a bit bogus imo. But so is boxing and any other sport decided by "judges" rather than time or distance etc.