How was Bebe and Emily subpar (or even Sasha)? Emily had a wild landing on her 3 lutz-2 toe but landed the darn thing. Plus Emily's footwork and spins are very high quality- certainly of a much higher quality than the Russian everyone is touting for the OGM. Sasha skated her usual nervous self, which BTW is scored much higher internationally than Michelle's "healthy" skates the past 2 years. Bebe did well as well. The only junior ladies who could top such performances are Mao and Yu Na, and those girls are good enough to topple any top senior skater in the world. Most junior girls would kill to skate like Emily and Bebe - esp since a 3 lutz isn't a jump that the average junior girl lands. Nor are the junior girls at US nationals nearly as polished.
Injured Kwan at Marshall's couldn't manage a triple. She can't come close to what the top three girls in the SP managed. You really don't know how injured Kwan can skate b/c Michelle hasn't skated with a ongoing injury. Even the stress fracture she sustained in 1997 (probably from those crappy boots she changed too) was completely healed by nationals. Also she was 17 years old. Her body didn't have the wear and tear on it that it has now and it appears the injuries she is getting are the result of trying to rush back to training.
Either way, I think it's presumptive to say that injured Michelle can skate better than those three when injured Michelle isn't competing against them. Her condition at Marshall's was promising that she could have gotten better by Nationals. Though the new injury is a huge set back.
As for Mzheng's comment on muscle memory, there still needs to be training to regain it. An injured skater doesn't miraculously walk on the ice and get it. Even Klimkin, who was out for a season, had a few horrible outings before he skated well at Russian Nats. I don't see how you (or anyone) expects Michelle to compete at the Olympics cold and manage a medal.