Not much has changed in the dynamics over the past couple of months in early 2012 election polling. No matter which of 10 Republicans is matched against President Obama, the president earns between 42% and 49% of the vote. That same dynamic was found earlier this year and suggests the election is still shaping up as a referendum on the president. That’s typical when an incumbent runs for reelection.
The numbers show that Mike Huckabee runs even with Obama at this point. Mitt Romney, who just formally entered the race, trails the president by five, 45% to 40%. Others who trail by single digits include Ron Paul and Haley Barbour.
http://www.realclearpolitics.com/epolls/2012/president/president_obama_vs_republican_candidates.html
The averages confirm what you are saying. Obama is like Clinton and made of teflon at this point.