I am not good at English but i will try to explain to you all in english what coach say.
Joey (Coach) : It is very difficult for me to choose from both of them. I choose because I think I can help her and have an idea to create a show for her. It doesn't mean who better than other. They all are too good. In my opinion, they all are too good like what coach say but i choose Rimmy for her beautiful voice.