I haven't gone to look back in the thread for when it was relevant, but my problem has to do with the flurry of drive-by reviews that catapulted Jarva into the top 10 a couple years ago, clearly trying to draw attention in its battle against extinction.
mrclc is a TR, but the other 9 reviews on the front page are all 5.0 and have a total of 9 reviews for those 9 users. To be honest, I'd love to believe that the best course in the world is in Europe or that there are courses better than HB, HH, RR, Selah, Moraine, Deer Lakes across the Atlantic. But color me skeptical.
Jarva is a stunning course with beautiful scenery, enjoyable hole design, and the absolute, bar-none best maintenance I've ever seen. It is absolutely a 5, and is comparable to (if not necessarily objectively better than) the other courses you've mentioned, all of which I've played. If long, fair, predominantly wooded courses are the magic design cocktail for a 5-disc course, then I can see where Jarva might fall flat for some. The holes tend more toward the open and simple than the cited courses, and I wouldn't hold it up as a shining example of the absolute best in modern design. That said, the holes are highly memorable, fun to play, there's a lot to look at, the pads and baskets are great, there's a pro shop on site, there's a cafe on site. I'm more generous with my 5's than some folks on here, so I can see where it may be a 4.5 for some, but I can't imagine a rating lower than that from someone attempting to objectively review the course vs. simply inspire (incite?) contentious discussion.
I apologize for my review being a bit thin on substance -- I tried to go more poetic because I thought the course's demise was imminent (turns out that they received a stay of execution at least through this year). I would argue that yes, Jarva holds the top spot currently due to the flurry of drive-bys, and it may not necessarily be the World #1, but it is certainly deserving of its place in the conversation.
I think there's some relatively unknown courses in Finland that would rival those courses. This is based purely on pics and video.
I can absolutely confirm this. Tampere isn't exactly unknown, but Jussi has created a marvel that few folks outside of Finland have played. It's a stone-cold 5.
Of the ten courses I played in Finland, only Nokia (the 12-hole standard layout, not The Beast) would fall below a 3.0 or 3.5 for me. Most were 3.5's or 4's. That's a pretty solid hit ratio. For disc golfers with the means, Finland is a relatively untapped well of disc golf delight. I highly recommend taking a trip to see how good they have it up in Scandinavia.