I don't think Harada even knows what he means. lol
Probably that the game adds 3 input delay frames to catch any lag jank, but then cuts out three frames from the startup of all moves to balance it out. But, now it's ~6~.
I will say that I went back to SC2HD recently and it felt...a tad thin. Maybe some people like the simplicity, but SC6 feels so much more fleshed out in terms of attack options for me. SC2 was a flash in the pan, but it's definitely dated at this point.
I hope SC6 isn't done, and we can still...