The point isn't
why Gox is different, it's why Gox is wrong. Bitcoin price movements on Gox represent what's going on in Gox, not the market.
If mt.gox has the problem,
other sites's data would have the similar problem.
Since XBT has more than one transaction center.
And they are located in different areas.
Time zone/Currency/exchange rate/fees/volume are not the same.
So the price of XBT just a interval.
Each transaction center will have their own price movement.
Of course mt.gox could have its own trend.
No, this is not the case. Other exchanges agree with each other. Gox is the only one out.
Look at the prices at top USD exchanges:
Mt. Gox: 95.4
Bitstamp: 89.33
BTC-E: 88.27
Tradehill: 90
Camp BX: 91.2
As you can see, most of them are around 90. Except for Mt. Gox, which is in a market of its own.
It's completely unfounded to say we'll reach 100 soon based on Mt. Gox data, because there is still a significant amount of room on all the other exchanges. (I still think we'll reach 100 soon, but not by looking at Mt. Gox's charts—because they're
wrong!)
If you still don't believe that Gox is wrong, look at actual Bitcoin merchants.
Bitcoinstore: $90.05
Minethings: $92.81
You'll find a lot more like that, and very few accepting Bitcoin at 95.4.