Not at all. The point is not how amazing such a universe simulator must be, the point is that a universe simulator isn't amazing. The point of the Church-Turing

Not at all. The point is not how amazing such a universe simulator must be, the point is that a universe simulator isn't amazing. The point of the Church-Turing thesis is that everything that ever was, is or will be; every supernova, every human mind, every intergalactic alien empire, every technology that ever can be, is no more complex than ENIAC (given sufficient memory).