I've held and seen both Xbox One and PS4 cases in person. Personally, I like the Xbox One cases a lot more. They're Blu-ray sized and the Xbox One logo is engraved on the case leaving the rest for artwork without that horrible "only on xbox" logo. The only negative is that the disc is on the left side of the box. It's a little unconventional, specially when games nowadays aren't coming with instruction manuals.
Only positive I can think of for PS4 cases in regard to artwork is that there is more space available [in comparison to PS3 and Xbox One cases] for people who will create custom artwork.