Size of the recession is kind of a weird metric, because it depends on the response. We could have had a really big recession post-2008 had things like TARP, ARRA etc not been passed. But I'm not sure that even POTUS McCain would have been able to avoid caving eventually.TARP did nothing but waste gov't money. Something like 90% of the TARP funds didn't even get spent until after recession was over. The size and slope of the recovery is what shows how feeble the government's response was - dumping in expense and creating uncertainty have made this worst recovery ever.
The US is recovering *much* better than other countries. Some things could've and should've been done differently in response to the crisis, but , judging on results alone, the US had the best response of all countries.