The Pacific air-defence burden without the VT fuse

How would the Pacific campaign change without the VT proximity fuse?

Ships would need much more sustained antiaircraft firepower to keep attackers farther away.

Without VT proximity fuses, the brief answer calls for much more antiaircraft firepower. Sustained fire would have to compensate for the missing capability while keeping attacking aircraft as far from the ships as possible. No estimate of extra guns, ammunition expenditure, or campaign losses is given.