That's the thing with DXO it doesn't take into consideration real world use. He purchased the 5DSR new and I guess he kept it for about 6 months, during that time he updated a couple of lenses to the very latest version on Canons recommendation as they said the old lenses were the issue (and by old I mean just updated). He just couldn't live with it and and traded it in for a 1DX. He has since traded that in for the 1DX II and still using his 5DIII.