The original idea was inspired by PostgREST, the obvious difference is Rest tries to support all SQL databases, and it results in some design principle that Rest prefers to use a universal method instead of bind to PG features(e.g. use PG role for user authorization). Generally PostgREST is more mature now if you are using PG. Thanks for liking it, I also think it could be a good tool to help developers for rapid prototyping and development.