This is what I said in the feedback thread for Ferrett's article, although I posted a day or two after the article had gone up:
Yomi doesn't translate to Magic very well because the strength of your plays in Magic depends far less on your opponent's specific countermeasures, which in turn is mostly because decks do one basic thing very well, as opposed to a video game character that does several completely different moves equally well. Once you specialize enough to have only one (strategic) option, Yomi loses a lot.
The classic case of Yomi in Magic, though, is game 3 after your combo opponent just beat you with a transformational creature SB game 2. Do you board your creature hate back in? What if they anticipate that and go back to the combo? If you read them properly, you get to out-SB them and just win.
