I completely understand how the scoring works and it is plain as day to see that the Americans are getting screwed. My girlfriend has been involved with artistic gymnastics her entire life up through college and still works with the UGA gymnastics team so I've become an avid gymnastics fan (I know, )
The commentators during the gymnastic events are pretty unbiased whenever the scoring is fair. However, they really are making some valid observations when they point out some scoring inequalities.