This is primarily a subjective thing, imo. Different cultures compose of different styles and standards that can set the results of such artistic design so far apart that sometimes they're just not worth comparing to. Other times, they can cross boundaries and will find universal appeal among gamers across the world. However, reasons for liking a game in the first place depend heavily on personal preference -- and now before I get derailed into an endless rant, I'll just say that pinpointing an official superior is not semantically possible, lol.
Now technically, from the non-Japanese perspective, however, obviously Western games will take the cake. The majority of games that hardcore gamers will jot down on a Top 10 list will, more or less, probably be developed by either a North American or European studio. In Japan, the opposite is just as true. No that doesn't answer the question of which is better, but it basically shows that people simply enjoy aesthetics and presentations that they're more familiar with.
To be honest, you could go into a whole lot of detail trying to explain the distinctions between the two. I'd try condensing them into a single summary but I can barely stay awake right now so I'm making sleep top priority instead, lol.
Still, this would also make for a great debate, so I wouldn't mind waking up to that. *wink wink nudge nudge*
