And if you wonder so much, why not simply play the game with different conditions to experiment?
Run your own tests, instead of taking the easy way out.
At least you provided some answer before making this response but in any case that's not very nice to say.
Of course this is a valid response to any question anybody asks. However I don't think it's unreasonable for someone to ask a question that they could possibly eventually figure out for themselves. It certainly saves a lot of time if someone that happens to already know the answer just gives it to them. The reasonable assumption is that it takes far less time for someone to share something that they already know than it takes for someone to derive it for themselves. Who knows someday you may have a question that Bisio has the answer to and because of your response he may be less than willing to share it with you.
Possibly such a response is warrented if someone is being an obvious pest but I see no evidence of that.
If you begrudge the answer then leave it for someone else.
Sorry for the moralizing but it just seemed to me to be a snotty answer. But who knows, everyone has reason to be grouchy on occasion. Perhaps it was just a bad day.
As far as Bisio's original question it's really a question of whether focus still takes 25% of the productive capacity enabled by the sliders from the other categories of production and adds it to the "focused" category in the latest version of DA. I'm sorry but I simply don't know.