I think it’s one of those things you wouldn’t know unless it came down to it, and the US Navy seems to think they’re a threat.

Pretty much the idea of an arms race I guess, if the missiles get through consistently, build a CIWS better able to deal with them. If they don't, build missiles better able to deal with the CIWS.

In a huge ocean with a fast-moving carrier group operating far from shore, the subs would be less effective.

In the south china sea, can you ever be truly far enough from shore and still be useful? I know a carrier obviously projects power over an enormous range, but if you want to hit targets in mainland china with F-18s you have to be fairly close to a landmass because of the geography of the area and China must have sub pens and/or naval bases in places that aren't China