I dont know - I read them both - I thought both books were pretty interesting ... although I thought that Average is Over focused too much on the Chess examples. Zero to One was good because it was short - I thought the only real "new" big idea was software monopolies can be "positive"
I think the thing about monopolies being positive, or at least not as bad as whatever else (regulating them) is pretty standard thinking for a certain brand of libertarian, which Thiel is.
I saw it more as a rehash of Michael Porter's idea that you should compete to be different rather than "better", instead of the approval of monopolies that many people have seen it as.
