Their company believes in dedication. Especially when it comes to engines. Therefore, they have teams, specializing in certain tech – and in their case, that's Unity and Unreal. You will not have to tell them twice what to do with your games – their guys know their tools of the trade. Samustai also works strictly according to the estimated budget and deadlines.
Quality requires attention. Their QA team will make sure that the porting process Is up to the highest standards, and the released game lives up to its predecessor on the parent platform. Nobody loves bugs, so they deal with them with extreme prejudice throughout the entire job with your games.