Perhaps I am being overly harsh--but this is what happens when you see a "performance for the ages" followed by one that is merely good. I do wish ABT would pair Semionova with Bolle instead--or even with Shklyarov. I think they have the potential for great chemistry, which I think would push Semionova to be more engaging.
I thought exactly this when I saw Semionova/Hallberg Swan Lake in 2012. They are perhaps a good match in theory with their height and beautiful lines, but emotionally they are both introverted and don't really draw much from one another.
I actually loved Semionova's Swan Lake with Gomes the year before, as did many on this forum. But perhaps I was too bowled over by her incredibly strong technique to focus on her shortcomings, or Gomes worked his magic and was able to pull something out of her that no other danseur could. I have only seen her in those two Swan Lakes, so I can't comment on her other performances, but I can't picture her as Giselle at all.