Not very. Mallet's is based on relativity while this is based on quantum mechanics, and at the moment we don't even have a good way to combine the two models of reality. Also, Mallet's would (if it worked) send stuff back in time, whereas this (if I read it right which is a big if) would make a genuinely random choice now just happen to be slightly correlated with the correct answer to the question you're about to ask.