yeah, exactly.
they are not good at adapting at all, especially against teams how they at not used to play against
i do not think its issue from coaching staff at all, japan has a really great staffs
but i think they rely too much into info to win against their enemies that makes them too dependent, but at same time there's no way to them to train this since T2 scene here is really weak (aim)
i think in other regions specially in NA when you're T2 player you need to deal a lot with unexpected things, aim diff, etc. so you mature these things before having a really good tactical team to support you