Your original post:
''There is no doubt that Korea makes some of the best and most high quality dramas in the world.
This is no bash against other countries's dramas, but I think we all can agree that Korea makes some mindblowing stuff. Why does Korea make the best dramas on this planet? How come they can be so good and be on a so different level from all other countries? ''
People gave you several example of other dramas from other countries that they find superior. You have either watched them but don't agree, you haven't watched them and lastly, in case of particularly China you state as such,
''Im not into Chinese dramas simply because I in general don't to likeChina, Chinese people or the Chinese language. This is no attack against anyone or China, this is just my opinion and comes from personal experiences after having to live in China for a few years for work.''
Here you admit that that you have your preference against a language, people and country.
See this is called bias.
Every single person's opinion is biased, every survey opinion is biased, any opinion in general is biased.
So trying to prove to you other counties have better dramas is fruitless because all are in general, biased opinion.
And for your epitome of Signal, a single episode of BBC's 'Sherlock' is better than the entire series, my personal opinion thank you very much.