Seo does many weird control group changes which must be due to his playing of brood war. There would be no reason to copy these control groups in starcraft 2.
There is no way you can just 'learn' such the specific setup that seo has and execute it exactly like him. There would be no point.
Also, seo has a very broodwar esque setup as I mentioned before, there would be no reason for chobo to have it the same as seo, the koreans just do it because they have played 1000s of games with that setup so there's no reason to change.
Also, for conclusive proof, you can see the 'tapping' of seo in the charts and its the exact same as 'chobo'. The way a player spams is like a fingerprint and there is no way you can learn to do it the same as anyone else.
Just as a side note, it's very possible that chobo was watching the stream of 'himself' playing in the Masters Cup LOL!
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