Well it's less about breaking their neck and more about forcefully blocking the airway of someone almost instantly.
Which doesn’t change the fact that without resistance Miasma will kill
Mash will be slower
Mel’s senses are way to good to simply get caught especially by someone slower
Mash would need an entire second to make a normal human hallucinate
Meliodas’s Darkness would cut both his arms instinctively and deconstruct his body instantly
And that’s only if Mash instincts are shitty enough to not feel the danger of a dude stronger Faster and that can passively kill him with multiple manners
Who could fight and harm people while not being counscious on multiple occasions (Sealed Wrath AM etc…)
1 second is thousands of times too much for a character that has FTL reaction speed
Conclusion:
Chocking him will be near impossible especially when Miasma attacks his vitals (Normally causing instant death to people with 0 resistance with even people as strong as Elisabeth needing to protect)
Ranged Hellblaze attacks will kill too without needing direct contact
His senses can’t be thrown off
He can sense movements and fluctuations in power in different planes of reality
Can use clones to spam ranged attacks
Can use TMF (We could even argue for him having 10 commandments since he fused his energy with them could hear his father akin to when they are possessed by commandments)
Can deconstruct Mash
Mash chokehold needs a whole second to have effects
I see Mash break dancing and sucking in hellblaze and the miasma to counter it.
He would need to constantly breakdance since Miasma is produced continously by Demons
Hellblaze is hot enough to passively kill him From meters
Darkness Tendrils get countered by Mash's IR.
They have IR too and scale to TMF Mel’s speed holding a chokehold would make him need to stop moving (He wouldn’t even be able to approach)
Also unless I'm missing something, the tendrils block stuff but I don't see why Mash can just rip them away or squeeze them even if it tries protecting Mel's neck,
They have way higher AP and he can summon trillion darkness Mel’s neck will be protected by the difference in speed his speed and passive abilities combined with darkness IR
He can fight while uncounscious anyway
he has Class Z which is significantly above Class G.
Doesn’t change anything about the fact that he’ll get sliced if he tries to chokehold Mel Lifting strength won’t do shit against Meliodas AP difference
Mash needs to be immobile for an entire second for a normal human to choke him darkness attacks will keep him away or kill him (Also Class T is accepted lessgooo)
Miasma will kill him instantly or heavily weaken him
Hellblaze will burn him
Mel can fight people with perfect Precog and IR and is still stated to be too much to handle for them in a sword fight
Mash only win con is to choke him
Which wouldn’t work
Mel’s win cons are
passive Poison Manip (With no resistance From Mash)
Heat Manip with Hellblaze (With no Resistance From Mash)
His Senses that will keep track of Mash
The difference in speed Enhanced by his negative energy amping him passively
Fear Manip that would keep Mash away Using his own instinct
Danmaku From 8 clones and aoe attacks with hundreds of km of range that would deconstruct Mash
Regen negation
IR
The fact that he is implied to be able to beat Danse of Avidia users
He can predict opps patterns of movements and can’t be cheated on by his Senses (Trying to modify His Senses is impossible as He can fight where senses are irrelevant)
He can fight normally without being counscious and is Just even more dangerous
Has Mid High regen at least
Just saying Mash choke isn’t enough and won’t work He himself has IR and to choke him Mash would need to stay immobile
Mash’s own instincts won’t allow him to approach
If He tries to break the distance he’ll die
If He stays at range Poison Manip will kill
Hellblaze can’t be extinguished and can be spammed it passively is enough to burn him to death
Deconstruction would one shot