That's not how this works.....Gracie fought at M/W when the pic was taken therefore it does.
Despite being a middleweight his height obviously makes GSP's size disadvantage against Bisping exaggerated. He's 6'4 with an entirely different frame, thus he means nothing in comparison to Michael Bisping. Look at Hendricks and Lombard compared to guys like Rockhold. Size is a unique issue at any weight.