OpenAI in its former state is very limited. The mode that got exposed to the public had lots of people defeating it, even though it defeated OG. We can always learn to beat it, its strength was the limited number of games it had played. What openAI learns over hundreds of thousands of simulated games, we can learn over a couple of replays. If openAI trained it fully and made TS play a BO3 it might win, but I highly doubt it will make playoffs if you put it in a tournament.