Format-wise, NA is better than most of the regions. But, production-wise, EU is above NA from many point of view.
Someone mentioned along the line the right to co-stream. Recently, EU got also the permission to do so. But where's benefit to stream on multiple channels the same matches? I don't see where's the advantage or the merit in doing that (of course, besides the streamers who earn some penny on the back of the users)... Shroud could have also done the same thing that EU did during the last Challengers. Streamers asked the right to stream the matches that aren't streamed, but what he's doing? He just opens a few twitch channels in different tabs in the browser and follows them... And here comes the herd mentality. And Shroud literally said he doesn't give a crap about any other region, he follows NA because there are players that he knows or played with.
Truthfully, only Sean Gares VOD reviews or streams are worth watching... Don't let other people like Shroud or anyone else take your subscription if you aren't gaining anything in return, like good information/ knowledge.