If one side unit has no sufficient strength to destroy sacrifice unit, the unit with this ability is automatically destroed anyway. Is splash damage triggering in this case?
Does Sacrifice Trigger Splash Damage?
No. Splash is always triggered only if Attack > (or = ) Health.
its only triggered when you kill a unit (except for bloodbath). you cannot destroy a scourge even if you have sufficient strenght, its self destructing regardless of the attack vaulue.