The thing that Masari has implemented compared to Monero is a new DAA that could now be added to Monero (https://github.com/monero-project/monero/pull/2887).
The plans for the future from what has been promised will be about on-chain scalability.
The point is that Masari wants to contribute to the development of Monero where some things I think can't be tested directly, and provide a fork of Monero stable and maintained over time