MGS3 Subsistence wins.
I haven't played MGS V Phantom Pain though.
On a sidenote, people often tout MGS2 as the hallmark of PS2 graphics, visual style and character model realism.
Well, even though I did give Raiden a fair chance way back when MGS2 released, his character model has always looked absurd to me.
Shinkawa and Kojima can wave the MGS2 document and anatomy character studies all day long at me,
but no one can tell me Raiden's character model makes sense, anatomy-wise or in context of "realistic style".
Because, I finally bothered to download the Raiden character model, and as a character artist I must say the
proportions and even the way of poly modeling are so incredibly warped....it's asbsurd;
The gigantic wide hips, the tiny wasp waist, the overly anime styled face etc. (even the little biceps bulge to the side is nonsense)
I did a quick edit on the model to show how the original compares to what I think would be a more reasonable model, even in context of MGS2's stylized "realism" visuals.
Front
Rear
Faces (hooray, a proper jawline and actual facial structure)
Perspective view