I'm not sure Sudoku Wallet is mixer,
Probably they are just kind of wallet that has anonymity transactions. Just like the Wasabi wallet it can generate a temporary wallet and mix your coin with Coinjoin. But probably I dont think how many times it will tumble into different addresses per transaction.
Expect Wasabi Wallet isn't designed as temporary wallet and is more transparent & open source compared with Sudoku Wallet. Besides, i'm sure wallet and mixers are 2 different things.