Sorry, I had to remove the link to his site. The forum rules say you have to have a minimum number of posts before you can request a site review.
In general, though, you want a website design to serve the purpose of the site. If the site is intended to sell, then it should be designed with that in mind. If it's simply to display his artwork or help him express himself artistically, then the design might be very different.
It also isn't necessary for a site to attract huge traffic for it to be worthwhile. It depends on who the intended audience is. Your boyfriend needs to decide what the purpose of his site is, and who he hopes to attract to view it. It's not about whether your design or his is "better," it's about what design and layout will best serve the purpose of the site.