Would the Darling Plan have satisfied the credit rating agencies?

Why have we retained our AAA credit rating despite, by S&P’s figures, suffering a larger debt-GDP ratio than America? The Taxpayers’ Alliance’s Matthew Sinclair answers the question in some detail here, but one passage from S&P’s own analysis stands out. They explain that:

“When comparing the U.S. to sovereigns with ‘AAA’ long-term ratings that we view as relevant peers–Canada, France, Germany, and the U.K.–we also observe, based on our base case scenarios for each, that the trajectory of the U.S.’s net public debt is diverging from the others. Including the U.S., we estimate that these five sovereigns will have net general government debt to GDP ratios this year ranging from 34% (Canada) to 80% (the U.K.), with the U.S. debt burden at 74%. By 2015, we project that their net public debt to GDP ratios will range between 30% (lowest, Canada) and 83% (highest, France), with the U.S. debt burden at 79%.