Britain's debt now a 'riskier proposition' than Italy's

You think the US cannot be in the same position? We are on the road and not that far behind GB in terms of debt to GDP ratio.

As of 2008, the United Kingdom's Debt to GDP was 10,450/2,773 = 3.77.

As of 2008, the US Credit Market Debt to GDP was 52,508/14347 = 3.66.

Does this mean the United State's debt, at nearly the same debt/GDP level, is also a riskier proposition than Italy's?

Source: http://jsmineset.com/
Source: telegraph.co.uk
Source: creditloan.com/blog/