I Think This Series Showed One of The Glaring Issues NA Has
One of the biggest differences that I noticed between EU and NA, is the drafting. EU sticks loosely to the meta while putting their players on champions they know they excel at. Throughout worlds, how often did you see an EU mid draft Galio or Lissandra? Not that much if at all.
Caps, in this series, played LB, Azir, and Aatrox. Two of these champions have the potential to solo carry the game. And if you look at past games this worlds, you will also see Akali, Irelia, and maybe one ryze (overrated) and lissandra game. Their staff knows that Caps can carry so they him in on carry mids. The same is true of their junglers, they place them on champions they know they excel at rather then putting them on it because "it's meta."
Then take a look at NA. Jensen, who imo, is the 2nd best professional mid laner in NA, was told to pick lissandra in each of the games he's played today, and throughout worlds, he has picked galio several times as well. Neither of those champions are true carries, they are utility bots. They put their consistently best player, on a utility bot for their semi-finals series. Just let that sink in. They put Sneaky on Vik, which while it was a unique pick, Sneaky is not a viktor player. Where was the Xayah, the Draven, or the Tristana?
Even pobelter! Dude was put on Galio and Ryze nearly every single game this worlds. A utility bot. Yet, during his stream when he was playing with Qtiepie, he told qtie that his favorite champion to play mid is Irelia...how many Irelia games did he play at worlds? Even Xmithie, a very strong early game jg, was turned into a peel/utility/tank bot, when that is not at all his playstyle.
Even locally, Bjergsen, the best mid NA, is being put on utility mids waaaaaay too much. Both in S8 lcs and worlds s7 he was a glorified utility bot. The same thing happened to Faker and look at what happened to SKT! What sense does it make to consistently put your best players on champs in which their talents cannot shine or force a playstyle that they don't excel at? Until NA allows more carry potential out of their mid laners, and stops chasing these protect the adc comps (which are pretty bad atm, hence the reason RNG was halted), this is where NA will always end up.
C9 is the first to realize this to a degree, as they were the first NA team bold enough to step out of typical NA Comps, and put their players on things they excel at (hecarim, lucian for example), and look where it got them? Semis. NA is a stronger region then people have thought these past few years, it's just...we are never allowed to be strong.