It's the purest form of a Decentralized Exchange and the most decentralized DEX currently known to man.  Other projects have cut corners to building a "DX," which has rendered them centralized in some form or fashion.  I think one of the main reasons other projects have cut said corners is because it's very difficult to properly build a true DX from scratch and average users aren't familiar with the technical issues and major security risks related to cutting corners.