The kuznetsov is a dangerous opponent for any navy but US navy.
Actually the Kuznetsov will be a dangerous opponent for anyone because the vessels that operate with it will include ships and subs with Onyx and Zircon.
The US Navy is huge but it is also spread around the world and of the 10 fixed wing carriers they have maybe 4 would be operational at any one time, so the threat to the Russian Navy is not 10 US carrier groups... at any one time there might be 2-3 grouped together... which is formidable, but not able to defend itself from Zircon missiles.
It provides air cover and air detection against enemy ships. And can launch stand off attacks.
It essentially provides early warning and a very mobile air defence for the ships and subs it operates with... even if its fighters don't launch any missiles it can fly above an incoming swarm of anti ship missiles and give detailed information about their location and speed so that ship based SAMs can be launched over the horizon to engage them.
Note a standard SAM for the Russian Navy is Redut which has 150km and 60km range 9M96 missiles which have active radar homing seekers so 60km away they could hit a wave top hugging target as long as there is a radar there to find it and direct that missile to a position where it can see the target for itself and use its own radar to hit.
A ship on its own would not see a wave skimming missile 150km or 60km away but a MiG-29KR can easily see such targets and pass on target data so missiles from ships can be launched at extended ranges and not wasted.
US have 10 super carrier so they outnumber the kuznetsov but near friendly shores it still adds 12 supersonic missiles and 20 aircraft.
Ten carriers that have no defence against Onyx let alone Zircon, of which probably 2 will be on the other side of the planet and four or five will be in overhaul or not in service.
If the powerplant is only to be refurbished - boilers are still very bad. Kuz needs full boiler replacement
Half the boilers were replaced when it was in dry dock before it was sent to Syria. The other half were supposed to be replaced after that deployment.
British carriers can move, launch and retrieve aircraft they were designed for and are not spontaneously combusting or sinking in port ergo British carriers are superior
British Carriers are not supported by cruisers, and the ships they have can't operate for long in the med because the water is too warm and their engines overheat... and the main fighters the British use are F-35s...
British carriers may be a joke compared to US ones but they still make Kuznetzov look like a joke in comparison
And you are not biased.
I feel sorry for the Royal Navy if they were ever to confront a Kuznetsov task force in any future conflict. @PD There is no ways the two British carriers can survive any conflict with a Kuznetsov task force (don't forget the Backfires and Mig31K's)
The new British destroyers... there are only 6... they couldn't afford the 12 they wanted... have 48 launch tubes for SAMs... they are a bit like Redut in that they have two missiles, a 30km range missile and a 120km range missile, but it has no ABM capability to defend itself or its carrier from high speed missile threats.
In comparison Redut has five missile types from the 15km range 9M100 CIWS missile, to the short range 60km 9M96 and the 150km 9M96 version, as well as the two versions of S-400 missile... 250km and 400km range... four of those missiles have full theatre ABM capacity...
But the Kuznetsov herself has 192 TOR missiles in the original form... replacement with current TOR would double that number to 384 missiles, and of course the 8 Kashtan systems will be replaced with Pantsir so 8 x 40 with 20km range missiles and also 8 x 2 30mm gatling guns.... the Kuznetsov on its own without its planes is probably better defended from air threats than a British Carrier and the three Destroyers they have for escorts.
But nah... Russian carrier is shit because PD says so.
I expect they will retain the Granites as they are still an effective missile against most opponents.
I seem to remember mention that attack missiles are removed... but I agree we really don't know for sure...