much of a muchness
(idiomatic) Of two or more things, having little difference of any significance between them.
The miller's daughter of fourteen could not believe that high gentry behaved badly to their wives, but her mother instructed her - "Oh, child, men's men: gentle or simple, they're much of a muchness..." George Eliot
Mens men gentle or simple, theyre much of a muchness. George Eliot