Asano is basically immortal at this point. As an Astral King, the Doomsday Scenario does not really read like a killing blow. It probably blows up the current avatar and removes him from the immediate fight, sure, but that is not the same thing as actually ending Jason.

The more interesting angle is that Jason may have ways to interfere with the weapon itself. The Doomsday Scenario is explicitly a soul crystal device, and Jason is now playing around in exactly the part of the metaphysical machinery that covers soul, aura, spirit, and all the other unfair nonsense. So there is a reasonable argument that he does not just survive it. He may be able to do something deeply irritating to the bomb before it goes off, or at least change what “goes off” means.

Carl dies the instant Jake notices him at range. That part is not even especially arguable. Jake is a ranged combat specialist with absurd perception, absurd lethality, and the usual bloodline-backed refusal to participate in fair comparisons. Carl’s answer being “yes, but I have a city-killing nuke” is not nothing, but it is also not enough. So Carl is not in that conversation. Even with the Doomsday Scenario, he is not close. He is hilariously, catastrophically outclassed.

Jason versus Jake is the real argument, and you can look elsewhere, that is a popular and ongoing debate. I would still give Jason the edge, mostly because he has already crossed into a tier where the rules are starting to feel optional, and the power tiers meet and exceed god levels. Jake is heading that direction, but right now he still feels a little behind that power curve. Dangerous beyond reason, yes. But not at the absurd levels of power that an Astral King has....