I think it is a stretch to say that a country that is half as wealthy as CA is in the same ballpark. To flip this around, if you made half of my salary, I would not say that your salary is in the same ballpark as mine.

I like your point on US debt, but the US is in a unique position in that it can print money if needed. Because the odds of a default are so infinitesimally small, I don't think it warrants any discussion when considering the fate of CA's financial issues.

Greece is in trouble because it entered the EU, lost control of it's currency, and as a consequence, cannot attempt to use inflation to minimize their debt. To make matters worse, their economy is a train wreck (professional guilds, rampant tax dodging, heavy reliance on government programs) making growth in the face of austerity nearly impossible. CA has neither of these problems (A dynamic, innovative economy and a strong federal government to rely on for assistance (as compared to the relatively weak-willed EU)).