The first different is the size of both pens. While the Sailor may called their pen Supreme, their size doesn't match up with the name in term of size. The Namiki Emporer size pen give the artisan more space of expression as compare to Sailor. We would think this is a plus one for Namiki.
Both cats are skillfully crafted on the cap of their pen. The face expression on both cat are living and no lack of details. However, the Sailor added a little color on the eyes of the cat making the cat come alive. One point for the Sailor.
The Namiki art layout in our option are one knot above that of Sailor. Integrating the cat into it environment give the design more complete in term of form and layout. A true piece of art. One point for Namiki.
If you look closer on the hilly bamboo landscape on the Namiki pen, it is crafted across both the cap and barrel. The artisan needs to be skillful to be able to align both the landscape from the cap and barrel to make them look like one.
The Sailor Kiku is crafted only on the barrel, similar to the cap. Both the cap and barrel have no link. We would think this is a plus one for Namiki.