YOU SAID:
My friend is not very much smarter than me and my best friend
INTO JAPANESE
私の友人は、私や私の親友よりもはるかに頭が良いわけではありません
BACK INTO ENGLISH
my friends aren't much smarter than me or my best friend
INTO JAPANESE
私の友達は私や私の親友よりずっと頭が良くない
BACK INTO ENGLISH
my friend is much less intelligent than me and my best friend
INTO JAPANESE
私の友人は私や私の親友よりもはるかに頭が悪い
BACK INTO ENGLISH
my friend is much dumber than me and my best friend
INTO JAPANESE
私の友達は私や私の親友よりずっと頭が悪い
BACK INTO ENGLISH
my friend is much dumber than me and my best friend
That didn't even make that much sense in English.