Is the US in a worse financial situation than Greece?

This article here points out how meaningless are the ways a lot of countries account for their debt.

Clearly, Greece is in terrible fiscal shape. To get its books in order it would have to pull in its belt each year by another 11.5 per cent of GDP. This provides new meaning to the word draconian. But the US is in much worse shape, because the CBO’s projections that reveal the 12.2 per cent fiscal gap already assume a 7.2 per cent of GDP belt-tightening by 2020.

But the assumptions underlying this 7.2 per cent adjustment are highly speculative, including a substantial rise in the share of taxpayers facing the Alternative Minimum Tax, once called the “millionaires tax” for targeting only the rich. The CBO also assumes that real wage growth will push all workers into much higher tax brackets, and that Congress will slash discretionary spending as well as greatly limit growth in Medicare and Medicaid benefits. Each supposition runs counter to recent experience.

Wishing won’t fix America’s fiscal mess. The US is one foot away from a deep and permanent economic grave. It is far past time to do meaningful long-term fiscal planning, level with the public, and implement radical reforms that permanently put America’s fiscal house in order.

If the government kept its books like companies are required to do so, they would have to record promised payments as liabilities. By that measure the "unfunded liability [for Social Security and Medicare] has reached nearly $107 trillion in today's dollars."