Its not surprising that everything is similar. Nomura has a very distinct style and he's constantly hassled for having maybe four character models that make up every man, woman, and child in the games he does character work for.

Personally, I think Noctis looks like Sasuke from Naruto except older but even his outfit isn't too far a stretch from Sasuke's outfit. Snow, looks like an older and generally larger Seifer. It might just be the outfit though.