160S/160C vs 160NC/160VC

Now that the new Kodak Portra films have been out for a while,
has anybody seen a trustworthy head-to-head comparison of Fuji's
Pro 160S vs Portra 160NC and 160C vs 160VC?

Ctein reviewed the new Portra films in Photo Techniques magazine,
but it wasn't really a head to head test.

I have not done a periodical search at the local library, but
a Google of the web comes up with nothing AFAICT.