If they switch on, then harm find it target, or else USN AF destroy SAM with AGM & PGM, both ways USN wins.The USN leads in strike packages under a blanket of HARMs. That is HARMs being fired off every 2 minutes through the duration of the strike mission, that forces enemy radars to go into degraded/switch off mode, but it doesnt mean the HARMs get kills - they do squat all.
If SAM protected by advanced AD/SAM which can shoot down high speed vlo target like AGM & PGM, then this trick is not effective.