I'm not sure if I interpreted it the right way, but I was under the impression from how the article translated it that you would have the option of optimizing/ raising the level of detail by "15%" with a higher spec system.

Rein, You're amazing and fantastic, maybe you could help clarify if he meant the finished product will be "15%" better, or if you will have the option to boost it by 15%(Textures/ Draw distances/ whatever graphical effects)