What are the key differences between Western RPG's & Eastern?

I'm doing an in depth analysis on Video Game Culture for my 'Extended Project Qualification' which will net me an extra AS Level in my last half term of Year 12. I'm answering a series of questions to provide enough content to pad out a 5,000 word essay and I'm hoping that I can find some of the answers I need on here. So, what do you think that the key differences are between Western & Eastern RPG's?