It has to be remembered that scores that top US gymnasts are getting now cannot and will not happen in London, with the exception of McKayla Maroney's vaulting, which can expect extremely similar scoring if she makes the team (she better be on it!!).
I am going to count Aliya Mustafina out of the gold. I just do not think that her superior bars set will make up for her other routines. Her twisting ability really has gone badly downhill even from what it was, and that will hurt her badly. I don't think she'll screw up floor like she did in Euro quals, but I don't see it as particularly high scoring compared to others. Her beam and vault are a bit more up in the air. I do not see her completing an amanar that would top Jordyn's. In fact I see her competing a sloppy not fully around one. DTY could work out better and safer for her. I hope she can regain all of her old difficulty on beam, that is difficult to call as she did not compete it at euros. I see her being edged out of the gold, but she is on my podium. Bronze
Larissa Iordache has come out of nowhere to prove herself as a top AAer. Her floor and beam are her high points and will score extremely well. She looks to be capable of an amanar also. Bars are not surprisingly a weak point, as we all know Romania tend to have bar workers in very short supply and have done so for quite a long time. Similar to Raducan's weak bars, her other events will make up for it, but not enough to take the gold. Silver
Jordyn Wieber is THE one to beat. Sure her bars are a weak point, but she has gotten much more consistent on them and the SV is not to be sneezed at. I am confident she can fix those beam connections. Her amanar is really well done and her floor will get a high score. She will have a fight on her hands, but I believe she will just narrowly take it. Gold
At this point it is hard to call USA's second AAer. Aly Raisman deserves it yet her form will take huge hits on bars, and also to a lesser extent on floor. Her amanar is fine, but not great. Gabby Douglas CAN outscore her (Nationals aside, Gabby overinflated to the skies) especially on bars of course, which make up for her weaker floor. Inconsistency is Gabby's middle name, her amanar was great at Nationals, yet this year alone she has missed and sat that thing numerous times. Her beam also tends to have legs up and big wobbles. A fall is not out of the question either. Yet it is not just a two-horse race, Kyla Ross has proved herself as a beautifully clean AAer. Her bars are great and place her far ahead of Aly, her beam is substantially better than Gabby's and she also has an amanar. Unfortunately it is the lowest scoring of the three because her landings are dangerous with huge steps (steps plural) and her floor has a much much lower SV. It WILL be Gabby if she can stay on in Olympic prelims, but the other two could easily steal a march on her if she has to count a mistake or a fall. Regardless of who takes that spot, they will struggle bigtime to make the podium. It is not impossible, especially if Mustafina has lower SV than expected at this point.
Edit: I don't think it will be as clear cut as this, Vika will be tough to beat! It also wasn't clear at this point that Kyla will not qualify for AA, she won't be used on vault and floor in prelims, so she can't.