I agree with the posing but the pictures do look out of focus as well, or you reduced the clarity on some of these in post. I'm not a fan of lowering clarity on the entire picture, instead I would reduce clarify in specific areas (face, pores only).
If not the clarity adjustments, with a 5DIII pictures should come out sharper. If you were shooting with your 85 1.8, did you shoot at 1.8? That would probably be the problem. For pictures with more than one person, aperture needs to close just a little bit more or you lose depth of field which may have happened here.