Given the field, flubbing floor was excusable, and arguably absorbable. Bombing bars was not, especially when the campaign slogan leading up to Worlds became, if she is not going for AA, she is needed for bars. Her Nationals average on bars gets her top 2 UB and top 4 AA even with the floor miss. A 12 on UB isn't doing anything even if we add a point back to floor.
Maybe the floor miss led to the bars miss, but at that point, you can just say what if Wong didn't err on floor and vault, McCallum on bars, etc.
Shoulda, woulda, coulda.