How much stronger will Japan emerge from the second Nuclear blow?

Question:

And how will emerging China who already overtook Japanese economy benefit from Japans troubles! Could China take over Japan once and for all?

Answer:

Japan will bounce back from this. :)

Many parts of Japan that are unaffected are still going about business as usual. Only in Northern Japan has life basically stopped. They are focusing on what's important now: rescuing their people and rebuilding their towns. There is no threat or talk of a Chinese invasion, and China would be stupid to try.