That guy is a well known troll and false flagger, I don't need to reply him with anything substantial, since it would be a waste of time anyway.
Then wiser to not respond at all to begin with.
Both UK and France don't even have a functional nuclear arsenal.
Says who? You?
The French no longer operate 4 Le Triomphant class SSBN then? Have their M45 and M51 missiles somehow ceased to function? Does their navy no longer operates Rafale F3 fighters, and these are not armed with the upgraded supersonic ASMP-A nuclear missiles? Doesn't the Armee de l'Air operate M2000N and Rafale-N with ASMP-A?
UK just becomes headless that they can't even properly launch the Trident missiles that bought from the US
RN operates 4 Vanguard class SSBN, with Trident II D5.
The Trident II was the original missile on the British
Vanguard-class and American
Ohio-class SSBNs from
Tennessee onward. The D5 missile is currently carried by fourteen
Ohio-class and four
Vanguard-class SSBNs.
There have been 161 successful test flights of the D5 missile since design completion in 1989, the most recent being from the USS
Maryland (SSBN-738) in August 2016. There have been fewer than 10 test flights that were failures, the most recent being from HMS
Vengeance (S31), one of Britain’s four nuclear-armed submarines, off the coast of Florida in June 2016
If you write-off the UKs Trident II force, because of 1 failed test, why are you not also discounting the US Trident II force, which consequently had up to 9 flight test failures? Do you believe the UK test doesn't involve the Americans, just because the UK bought these from the US?
France's M51 is still unproven and cannot perform the salvo launch.
You discount at least 6 sucesfull launches, including from SSBN. What would be your source of info concerning salvo launching? And even is you were correct about that for the M51, that still leaves the M45s, which remain fully functional.
PLAN operates 5 (perhaps by now 6) SSBN, of which 1 is an old and noisy Type 092 with 12 single warhead JL-1. The remainder are Type 094 with 12 JL2, each with 3-4 warheads (max 48 warheads per SSBN). That's a capacity of 252 max possible warheads, therefor (if JL1 carries 6 warheads, lke DF-21D, then this adds 60, making a total of 312).
This compares to 16 M51 with 6-10 warheads (max 160 warheads per SSBN), or 16 M45 with 6 warheads (max 96 warheads per submarine) on France's four Le Triomphant. That makes a capacity of at least 384 and at best 640 warheads.
The four British Vanguard SSBNs each have 16 tubes for Trident II D5, with 8-12 warheads each (max 192 warheads per SSBN). Which makes for a capacity of 768 max possible warheads.
China's total nuclear arsenal size is estimated to be between 100 and 400 nuclear weapons.
https://en.wikipedia.org/wiki/People's_Liberation_Army#Rocket_Force
In total, China is estimated to be in possession of 260 nuclear warheads, with an unknown number of them active and ready to deploy. However, as of 2013, United States Intelligence estimates the Chinese active ICBM arsenal to range between 50 and 75 land and sea based missiles
See
https://fas.org/issues/nuclear-weapons/status-world-nuclear-forces/
https://en.wikipedia.org/wiki/People's_Liberation_Army_Rocket_Force
Note: 2013 is 5 years ago, during which time more Type 094 SSBNs have entered service with PLAN
Clearly, relative to UK and France, any relative numerical edge in nuclear tipped missiles China has lies in its landbased strategic and tactical missile forces.
https://en.wikipedia.org/wiki/People's_Liberation_Army_Rocket_Force#Active_missiles
Only a fool would believe that France has a stronger nuclear arsenal than China who possesses a fully functional three dimensional nuclear deterrence.
I'll leave it up to the readers to decide who they think is a fool.