There's really no difference between the xii and the xiii. Both shoes have a booty/sleeve like fit. The supposedly one on one dynamic fit come from that horrid overlay on the midfoot. The more I look at the shoes design, I really don't think you can lace/unlace these. The posite overlay is stitch across the mid section. And since it's a sleeve like shoe the laces can't go underneath the inner sleeve. So there no way you can get to the laces.
Like I've been saying the shoe looks good from certain angles. That last side shot of the shoe looks weird. As far as tech goes...Cmon fellas show me some real tech. The flywire is a Nike gimmick. So I guess some thin strands of woven yarn is gonna lock your foot down any better than the main upper. The posite isn't attached to the midsole on this model so how is it stabilizing the midfoot. Plus the forefoot Zoom pod system wasn't that great of an idea as you couldn't really feel the zoom cushioning. LOOK wise the 12s had a better performance appeal than these.