Hmm...its not really about who has the most to gain or lose. There are fundamental economic conditions at play not just internally, but externally which are influencing the dollar.
We're in the dark right now, and we don't know who will come out on top, who will do well, and who will do worse. I think we are doing pretty good, but our economic health is dependent on so many other external factors that if others do bad, so will we. And all of this instability, especially what is going on externally is a cause for concern, because while we can have a certain amount of control over our own economic health, we don't with regards to other countries we are tied in economically with. And nobody knows how this is going to all play out.
Why do you think we had a G-8 summit to discuss these issues? It's because we are globally intrenched in these issues. If we don't buy goods that are manufactured in say China, what do you think will happen to the factories and jobs there? How will impoverished countries feed their people? What social consequences will occur because of this? Will this result in civil wars and social services breakdown? In impoverished countries that are dependent on our rates of consumption and are a billion strong what will be their fallout? We don't know. And if our major manufacturing centers that were outsourced breakdown, what will happen to the cost of manufacturing these goods here? How will that push inflation for say a computer? How high will inflation rise to account for the loss of supply because these factories shut down in China, because they couldn't afford to maintain them?
These may have been theoretical consequences, but we are coming close to them being actual consequences.