Negligible: small or unimportant
: so small or unimportant or of so little consequence as to warrant little or no attention
Severe:
VERY SERIOUS
severe adjective (VERY SERIOUS)
causing great pain, difficulty, damage, etc.; very serious: a severe earthquake
Based on Marco's patterns of attacks toward everyone we have ever seen him fight his damage output is low since the other cats he hit only have NEGLIGIBLE damage