Cloud Strife
Member
Whole thing is fishy, would have loved to see that fight in action.Maybe they didn't try to kill. Fuji and Sengoku probably didn't even put too much effort into fighting him for one reason or another. Maybe they were lazy or didn't want to kill him because they felt uneasy with the idea of bringing Kaido's wrath on them just at that moment.
Besides, the Marines are just one part of the WG. Who knows what bullshit powers/forces the WG has hidden away or is building up.
If Jack clearly got away with his ships then how would they report his death? He got away.