From all the SC2 games I've played and watched, there is very little anticipation and prepared counter. In other words, yes, your opponent might think you'll do X, but there is a small chance they'll actually prepare to counter X. (Unless it's something really really basic, like seeing a fast rash from your opponent and reacting by building more defenses.) Most of the time you can reliably predict that your opponents will do what they've always done.
[A discussion between Troi and Data about Riker's possible tactics in a battle simulation.]
DATA: Only twenty-one percent of the time does he rely upon traditional tactics. So, the Captain must be prepared for unusual cunning. Counsellor, Commander Riker will assume we have made this analysis, and knowing that we know his methods, he will alter them. But, knowing that he knows that we know that he knows, he might choose to return to his usual pattern.
TROI: Wait, wait. You're over-analysing, Data. One cannot deny human nature. What kind of a man is Commander...
I've run across a couple of questions about the value of dual n-back, and this is the best place I know of to find people who've worked with it.
If you've tried it, has it noticeably improved your working memory? Was it enough to be worth the time?