You know what is one problem with top players?
If they face non meta strat from equally good players, they'll struggle.
Element of surprise left by non meta strat leaves them helpless.
That's the reason why top players try to invent new, working, non meta strats prior to tournaments.
Your example of ONE SINGULAR GAME is completely irrelevant.
Seems like you only seen one single game from them. They played ALOT games in the training vs best teams and even in the torunements the used this tacitcs with succes...until the enemy find a counter ....and ven with thats commander and tactics it was very hard