Let's say you played some match with "Tactic A" and won it only by one goal (1 : 0) and then you loaded your game save before that match and played it again but with other tactic "Tactic B" and you won it by ten goals (10 : 0)
In both cases you got 3 points and it looks like there's no difference between the tactics but if you look at the goal difference then you see that "Tactic B" is much better than "Tactic A"
IMHO, Goal difference is a better indicator than Points, anyway, you always can pick any Sort you like
Wait, you would genuinely prefer to get less points per game but have a better goal difference?
Yes, when you win a game it is always better to also improve your goal difference, but over the course of 152 games in the test I would prefer the points any day. Who cares if you have a goal difference better than a team who has 1 point more than you.......