I will just try to answer the question as logical as I can, going from the code:
In the code the mentioned trigger is "core_percentage", obsiously the only thing counting against "core_percentage" are provinces that are not distand overseas. This most likely means that distant overseas provinces are ignored alltogether.
Its quite easy to test: Just play as holland on very easy, cheat lots upon lots of colonists and gold and just go bonkers with colonizing in the new world, cheat yourself some cores there and move your capital overseas, just make sure you have the right conditions.
In the code the mentioned trigger is "core_percentage", obsiously the only thing counting against "core_percentage" are provinces that are not distand overseas. This most likely means that distant overseas provinces are ignored alltogether.
Its quite easy to test: Just play as holland on very easy, cheat lots upon lots of colonists and gold and just go bonkers with colonizing in the new world, cheat yourself some cores there and move your capital overseas, just make sure you have the right conditions.