i designed a mission super-swarmer fleet and used against a level 1 mission. instead of providing 5X damage protection, the defence provided ABSOLUTELY NO PROTECTION
please look into this

Invader jessiedog (#67609)
Engaged Units
Fleet Name # of Units Attack Defence Hitpoints
Defensive Destroyer 30 79.625 2.738 312
Defender Unidentified Fleet (#)
Engaged Units
Fleet Name # of Units Attack Defence Hitpoints
Alinal MK 17 1 400.071 1.210 115.644
Hades' Murderer MK 5 3 150.080 1.042 13.533
The Fearful Knave MK 3 1 30.005 8.611 55.069
Our long range scanners report 39,332 enemy fleet power!
Engage
Assault Note
jessiedog(#67609)'s Defensive Destroyer fleet engaged Unidentified Fleet(#)'s Alinal MK 17 fleet on the battlefield.
The fleet Defensive Destroyer did 115.644 damage to fleet Alinal MK 17.
jessiedog(#67609)'s Defensive Destroyer fleet destroyed 1 of Unidentified Fleet(#)'s Alinal MK 17 fleet.
The fleet Alinal MK 17 did 9.360 damage to fleet Defensive Destroyer.
Unidentified Fleet(#)'s Alinal MK 17 fleet destroyed 30 of jessiedog(#67609)'s Defensive Destroyer fleet.
Your armada was completely destroyed...
Assault result
jessiedog(#67609)'s 30 / 30 (100%) Defensive Destroyer are destroyed during battle.
Unidentified Fleet(#0)'s 1 Alinal MK 17 are destroyed during battle.
You attacked Unidentified Fleet(#0)'s fleet and mothership from deep space.
You destroyed Unidentified Fleet(#0)'s 1 ships and lost 30/30 ships.
You lost 124.080/124.080 fleet power (100%), while the enemy lost 20.060/39.332 fleet power (51%)
Primary Objective: Destroy 50% of the enemy while losing less percent of the armada then the enemy.
Your attack failed and achieved nothing.
You lost more power than Unidentified Fleet(#0) during battle.