Hi,
IMHO the MF look is "composed" by: great color rendition and very good sharpness and lack of aberrations.
Is not easy to emulate: ff bodies capable of very good resolution haven't a good color rendition. IMHO the last generations cameras (d800s, d600s, alphas, 5d2/3 6d) have significantly worst color rendition than previous generation (5d, 1ds3, d3s, d700).
Older FFs have better colors (not good as MF) but a smaller resolution.
Best Regards,
Pietro