Ahead in the polls

Presidential Candidate Sen. Barack Obama (D-IL), is ahead in the polls. However, for some, that is not good enough.
Why isn't he more ahead in the polls? some ask.
I say what does it matter? He is ahead in the polls.
These arguments, to me, go back to the very idea I personally reject: Blacks have to be twice or four times better than any white person. This goes for running for president, competing for a job, competing for a man etc.
Why can't Black people be like everyone else. Why are Blacks held to a higher standard just to be included?
Only cream of the crop (or very top cream of the crop in Obama's case) need apply.
Really, now. Any other man would be congratulated for running a good race. Why can't this man, Obama?