Everything comes with a cost!!!
The support assets that gives you a decisive have an penalty (delay of 5 turns) in their reinforcement turn and a small advantage (heavier).
But we will have the chance to discuss further these issues after the first testing.
you will see that victory levels are not the case in that campaign, because the player will have to fight to preserv his core force; the best results the toughest the game becomes...
cheers,
Pyros
p.s the player who wins the primary with a decisive then instead of the start of the next chapter he plays a penalty scenario (without replacement points) where he is ambushed by the enemy. The opposite is happening for the player who suffers a decisive loss (bonus scenario)