@AAR Galileo
I understand your pov. I however never bought the ad leaflets of military hardware providers. The 100% interception is too optimistic for me. Attack missiles have also improved in term of speed, attack profile, decoys and stealth.
It s the eternal shield vs spear fight. A 50% to 75% of interception seems reasonable if not overly optimistic to me
That's why I wrote "on paper" but even when you have AA missile like the RIM-161 Std 3 or an ASTER 30 that can intercept Ballistic Missiles flying at more than Mach 5 (Black Sparrow) with a direct hit kill you can have some faith on the missile to intercept a fast (Mach 2+) ASu Missile. By the way, the ASTER family was developed with the Brahmos/Oniks characteristics in mind.
For the attack profile, well you have either slow missile sea skimming with pop-up capabilities or fast one (hypersonic) flying at 100 feet (or more) at least with no pop-up cap (the structural stress on the misisle body will be to much). There is rumor about subsonic flight then hyper attack mode for the 3M54T (SS-N-27 Sizzler family) but not confirmed.
For the decoys, when you see the path followed by the US, they develop the MALD family then add jammer and now they tested one with warhead. "If it has to fly like a missile, look like a missile, be smart as a missile then why not add a warhead?"
Who use aerial decoys, the list is short : USA.
Stealth, well there is not a lot of AsuM with stealth capability AGM-158(C), KEPD-350 and the stealth or low radar visibility features are located on the nose of the misisle, that why there is the Cooperative Engagement Capability (CEC), an asset (eg F-35, F-15SH, E-2D, RPAS, ....) can locate the missile from the side or above and transmit the interception vector to a ship OTH with update of the info in real time.
The ship will always have some advantage, it size (more weapons, CM, radar, CWIS, decoys, ....) and the fact that she will always be in a shared networks of information.
On the simulation video I posted, we consider that it's a mission kill, the ship has no more reliable defense against an attack, he must return to a port to refill the Seaviper.