I think PWT works better with TQFTs, but it's an area of active research how TQFTs work, so we'll have to wait and see. So far, the difference is philosophical

I think PWT works better with TQFTs, but it's an area of active research how TQFTs work, so we'll have to wait and see. So far, the difference is philosophical, but it's worth pointing out that so is Copenhagen. They originally thought they had a choice in the theory between non-locality and non-determinism, so chose to build a theory around non-determinism for philosophical reasons. However, non-locality eventually became incorporated because some phenomena are non-local in nature. So in a lot of senses, the Copenhagen interpretation simply has an extraneous assumption of non-determinism and they don't want to rework their model because it would be a lot of work. Legacy cruft.