Hey Franky! I think OI's should be set according to the tactician's wishes, because they are part of the tactic (There should be a way to save them within the tactic file, but this is not an option, yet).
Due to many reasons, we cannot handpick the first 11. One of them being objectivity, another being time limitations, etc. So, yes, you are right in that some tactics will not work as well in our test as if one is following every instruction from the creator.
So, try not to look at only the top 3 in our list, but rather see the list as a great database of good tactics, and find your favourite based on your own experiences
There are links to the original threads, so people can go there to find the creator's instructions, for example specific attributes for certain roles.