btcchina hitting an even higher price than gox means that the Chinese are leading this bubble, they are the ones buying up the coins and gox and bitstamp and following the Chinese price. You'll notice the Chinese market is much more volatile, there was a $40 dump last night on btcchina that only translated into a $10 drop on bitstamp and mtgox. It's a Chinese bubble, and they have a gambling spirit
$300 is on the way soon I expect.