If its the one, I'd say there is no chance of zeldris winning. The one is virtually invulnerable. Not to mention that it having so much raw physical power puts zeldris at a disadvantage.
As for pre noon, at first I thought zeldris would take it but I actually think he might be able to pull it off. Of course, that also depends on how the one performs next chapter.
Anyways, what makes me think pre noon escanor has a chance is the fact that escanor has been able to defend himself from zeldris' ability while ludo and merlin haven't. And this is considering ludociel clocks at twice as pre non escanor.
So my takeaways are:
1.- Ludociel clocking at 201k probably suggests he simply can't perform as well as he could otherwise while in a frail human body. He probably isn't even abusing flash as much as he could so as to take care of margaret. Not out of actual concern of margaret of course but rather because without margaret he'd only have one spare fleshbag and an inferior one at that.
2.- Merlin has also struggled with zeldris' ability. She has countered only with fast paced teleportation.
4.- Escanor in spite of his lower pl than ludo has been able to resist zeldris' pull and push on his own. So how is escanor different from ludociel or merlin? Ludociel most likely is a magic user and merlin we know for a fact is. In other words, escanor is very well equipped to fight zeldris in general simply because the bulk of his power is strength. The only reason escanor even took a hit from zeldris is due to protecting merlin.
5.- To add to the previous point, zeldris has a sort of immunity to magic. Which means at least most of what ludociel or merlin could do here is meaningless perhaps even in spite of PL.
So how does this all play out? Escanor could resist the nebula even before the one. He resisted it, with trouble, even after zeldris transformed. And could even take a hit for merlin. Basically, escanor is very well equipped to take on zeldris. He can resist even the strongest nebula pulls and pushes and zeldris can't turn him to confetti even if he does get pulled. Otherwise escanor would already be dead.
Also, escanor before noon most certainly clocks higher than zeldris with his advance demon mark. And even then, there is no way zeldris hits harder than AM meliodas as we last saw him. Which is significant considering AM mel's sword got stuck in escanor. It would take some effort but its not impossible for escanor to jump in and be able to land a couple hits on zeldris while he is using the nebula.
Anyways, this might change if zeldris has some manner of counter against physical attacks. If he does then he just might outlast the one.
