I myself is caught in these same lines of questions. But looking at it, it seems that Obama realized or admitted one of his weakness that is... foreign policy. I see no negative in admitting to your weakness and seeking to improve that weakness after all no one is perfect in this world.
"In naming my colleague and friend Sen. Joe Biden to be the vice presidential nominee, Sen. Obama has continued in the best traditions for the vice presidency by selecting an exceptionally strong, experienced leader and devoted public servant. Sen. Biden will be a purposeful and dynamic vice president who will help Sen. Obama both win the presidency and govern this great country." Those were the words of former Presidential Primary Candidate and Sen. Hillary Rodham Clinton of New York on her reaction to Obama's selection of Joe Biden as his veep.
Meanwhile Ben Porritt,spokesman for the John McCain campaig says, "There has been no harsher critic of Barack Obama's lack of experience than Joe Biden. Biden has denounced Barack Obama's poor foreign policy judgment and has strongly argued in his own words what Americans are quickly realizing — that Barack Obama is not ready to be president."
Contrasting view and reactions that will certainly have an impact on the electorate. The thing is what would be the chance of an Obama-Biden ticket against a still unnamed veep for the Republican and John McCain? Well we have to look forward to that in the fall elections.