Get a small RCS in comparison with others ships can be interesting but i don' t think really also useful as for aircrafts do 180 m and the RCS remains present...
In more this Stealth ships cost clealry more as others, look NavyReco article with new 12th San Antonio want about 1/3 in less and better have 1/3 of ships in more even a little less sophisticated you get a clearly a more big military capacity or power.
But i think USN as RN with QE almost obliged to acquire the cancellation of the contract cost same or mor for RN finaly very interesting but USN a series of only 3 ships would be not interesting for maintain price and she do from long time only big series.
They have a quality coz big displacement of 15000 t and especially VLS arrangements on 4 areas designed to deflect an explosion outwards and are more difficult to sunk as others USN MSC.