That's one thing that gives me a pause wondering whether it's legit. The asymmetric top bezel looks odd.
On the other hand, there was this prediction a few years ago with the almost identical looking bezel. This was supposed to be based on a lost Foxconn prototype. Thus it could very well be the result of those experiments.
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The alleged prototype with the similar top bezel shown above was leaked in 2011, well before the Galaxy S4. I think just a natural progression of reducing bezel from the original iPhone design.