With the Asian exams are harder thing - true, they may be much harder for science and maths (and I'd know, I was born in India (but have been educated here all my life) and visit my family there every year), but just, the whole education system is completely different there. Creativity and individual thoughts and analysis aren't tested there as much as they are here. My cousins English tests don't allow here to sort of, have her own thoughts etc...she has to write what's written in some textbook somewhere or else she gets it wrong.
I read this quote once, that 'The mind is not a bucket to be filled but a fire to be lit' and I reckon that doing GCSEs has at least 'lit my fire,' so to speak (gods that sounds so corny!), especially when it comes to English and Drama. I've always been sciencey and I'm doing Further Maths, Economics, Physics and Chemistry next year so I'd definately be classed as a scientist but I now have a real interest in literature and film and theatre and I read poetry and stuff because I want to and because doing english lit has given me an interest and a basic understanding of poetry. Now, I'm not going to do and English degree or whatever, but I do believe I'm more 'well rounded' for having taken English and Drama (and 3D deisgn which is another artsy subject). But I don't believe I'd have had the same chances if I'd have been educated in India or somewhere.
My cousins may know more about physics or maths than I do, but they haven't been given a chance to make up their own minds about the arts. I know saying this will probably make me sound really biggoted or something, but the young people who I know in India - *they* don't feel like their education has 'lit their fire.' I'm sure that some Indian schools do put greater emphasis on the arts, but overall I feel that the two systems are completely different.
Also, I think that money has a lot to do with education as well (which sounds pretty obvious now that I write it). I'm not sure what it's like all over Asia, but at least in India, in the poorer state run schools or the ones that charge cheaper fees, it's common to see classes with up to 50 people in them, therefore you can't really focus on the individual. I think that it's easier to teach things like maths and science and impart facts onto a 50 strong class, than it is to encourage people to develop opinions on poetry or to discuss world development or something.
So yeah, what I'm trying to say is, the papers may be showing that GCSE equivalents in Beijing are way harder when it comes to maths or something...but the two systems are completely different and the 'person they are trying to produce' is different too.