Because the mission profiles and types of missiles have changed. Don't get wrapped up in the number of cells, focus on the space and configuration. Some missiles get one cell of space, others might take 2 or 4. But the flexibility and space to do that and change the loadout is key. 112 cells is a lot more space than 96.The US has the Ticonderoga ddg so that the Arleigh Burkes is sufficient with 96 VLS.
How come the type 055 has 112 VLS, if 96 VLS is enough for the the Arleigh Burkes?