solarz
Brigadier
Modern SAMs travel at high supersonic speeds, there is no outrunning them unless you have a fighter designed for speed and the missile was launched at you from the edge of its engagement envelop. You get within the effective combat range of a modern SAM like the S300 or HQ9 and you are in deep trouble.
And I do not know what aircraft you are talking about that can fly above the operating ceiling of modern long range SAMs. Just as an example, the F22's service ceiling is 60,000ft, which is roughly 18,000m. The S300's operating ceiling is 25,000m.
SAMs are really a second line defense, as they are fairly static and have limited mobility. They are there to catch anything that gets past your primary line of defense, which are you own fighters.
The role of the defending fighters are to try and intercept the incoming strikers before they can launch their stand-off weapons. If they can get to the attackers, they can force mission kills as the aggressors are forced to ditch their munitions to defend themselves. If they cannot reach the attackers before they launch, a portion of the defending fighters can peel off and aim to shoot down as many of the income cruise missiles as possible before they get within SAM range. The fighters would also be able to provide the exact vector the missiles are coming in from, so that AAA and SAM sites could be read and waiting for them.
With a fighter screen in place, the PLAAF will happily intercept USN cruise missiles all day long as they have the numbers to keep enough planes on rotation 24/7.
Cruise missiles don't grow on trees, and USN ships only carry a finite amount. Cruise missiles are the scalpel of the USN, they might make deep cuts, but against someone as large and resilient as China, it will only be an irritant on its own. The USN's main hammer weapon are its freefall and glide bombs, of which they carry vast quantities of.
But to use them, they will have to get uncomfortably close to their targets. That means a requirement to neutralize the PLA's air cover as well as SAMs, or else they will never be able to land a telling blow. But it will be very difficult and costly to try and do that. With what the USN has compared to what China has.
Thanks again, you post has been very informative!