YOU SAID:

your honor, my client is innocent on the grounds of they are too stupid to commit this crime

INTO JAPANESE

殿下、この犯罪を犯すには愚かすぎるという理由で、私の依頼人は無罪です

BACK INTO ENGLISH

Your Highness, my client is innocent because he is too stupid to commit this crime.

INTO JAPANESE

殿下、この犯罪を犯すには愚かすぎるため、私のクライアントは無実です。

BACK INTO ENGLISH

Your Highness, my client is innocent because he is too stupid to commit this crime.