I think about it differently.

In my understanding you always get the bonusses you've built up in training, even if offline and even if you don't activate them. I do still get comments after matches I didn't watch like: "Due to our condiditon bonus...". Then the benefit of being online is that you can enhance one of those bonusses by activating them (about four times a match).

In your example posession bonus of opponent will rise from 6% to 9% if activated. Not sure about the 8%, but let's say that if it goes to 12%, you'll have a 3% advantage.