YOU SAID:
i know i can treat you better than he can
INTO JAPANESE
私は彼より治療できることを知っています。
BACK INTO ENGLISH
I know you can treat him.
INTO JAPANESE
私は彼を扱うことができます知っています。
BACK INTO ENGLISH
I can deal with him you know.
INTO JAPANESE
私はあなたが知っている彼と一緒に対処することができます。
BACK INTO ENGLISH
I can deal with him you know.
That didn't even make that much sense in English.