Yeah I'm gonna go on a limb here and say Varyag when it enters service will have one of the most capable if not the most capable organic ciws of any carrier.
Hell it'll probably the most capable carrier outside of the Nimitz class simply due to size, defenses and the massive array of sensors at its disposal (yes I'm including the De Gaulle, India's conventional carriers, Kuznetsov, Wasp class and maybe even the QE depending on its airwing).
doesn't matter if it is on Varyag or not.
This is arguably will be one of the biggest-badest-gun-CIWS-in-service...evverrr.
Only way you can top this is make a monster 40mm gatling gun or something like that.