um just to correct somethings here, Vision absolutely can phase through energy and non physical attacks, he literally does this in wandavision and in his fight with Ultron, as for being organic, he's organic in BIG quotes, as his entire make up is of vibranium synthetic weave, they even mention it when they very first talk about it, it heals hawkeye through replacing his tissue with synthetic tissue. Alongside this, Vision has shown explicitly to be machine based internally when we see his corpse in infinity war, his dissection, AND a stylized version of his internals. He's purely machine that simulates being a human, and if radiation was a problem for him, he would die instantly having the mindstone inside of his head as it is. Also if Thor drops Mjolnir in Godzilla's mouth, he's pinned, unless he wants to rip his jaw off, as he isn't worthy, and thats the only thing that actually moves Mjolnir, heck, if he through it down godzilla's throat it'd probably ripped write through and out the bottom. Scarlet Witch in this key, her IC thing to do, is immediately Mindhax, something she has done in almost every main scene where she is attacking something that she can mindhax and she can do it by range just as when she used it on whole groups of people.
Wanda's probability magic, while subconcious should still aid them as well, even a little slightly via just increasing the chances of Godzilla messing up Also just realized she is missing her deconstruction powers via straight up disintegrating ultron sentries left and right but that's a CRT for another time