You're underestimating Kuro hard, he's not just being carried by Rox and he's a laner who has frequently outperformed your top 2 laners. Rox is the best team in the world right now because they have at least a top 3 player in every position on their team, putting a player like Bjergsen above him who has done nothing but crush his way through a region with notoriously weak mids is pretty absurd.
If I had to construct this list I'd have something along the lines of
1.Kuro
2.Faker
3.Crown
4.Scout
5.Maple
6.Xiaohu
7.Bjergsen
8.Westdoor
9.Perkz
10.Athena
11.Sencrux
12.Jensen
13.Kira
14.Tockers
15.Ryu
16.Huhi
I'd even consider swapping Scout and Crown TBH. I don't think it's justifiable to have Crown as the best mid in the world, he seems to be consistently somewhere between 3rd and 5th in Korea. Sure he has a few games where he looks amazing, but then he'll go and get absolutely destroyed by an utterly average Korean mid like Fly 2 games in a row. The thing that makes Faker and Kuro better than this is that they are super consistent, they don't have bad series. They may have a bad game every now and then but they won't play two bad games in a row.
I also think you are heavily overestimating NA. Remember that this is the region that has historically had the weakest mid laners in the world. When Bjerg and Incarnati0n used to play in EU they weren't special, there were always other mids who were as good as them, most of the time better than them in the region. This hasn't changed, there are still EU midlaners who are constantly pressuring the top and driving the overall quality up in the region.
I don't understand peoples reasoning for elevating these players. The only recent international tournament involved a reeling SKT who went on to shit the bed for the first 5 weeks of the LCK seemingly having no idea how the jungle role actually worked and a G2 who seemingly forgot they actually had to play League, instead thinking they were going to some sort of fan greet. The only region who really performed as expected at that event was China.