And what damage Ladmirals did to Marco?
For you to say Marco did no damage, then you need to show what damage Ladmirals did to Marco.
For example, Garp did a little damage to Marco, a little, but at least he did something. But Garp also said he can kill Lakainu so, he is above Ladmirals. Only he and Fleet Admiral Sengoku together couldn't do shit to BB, lol.