Your contention that all polls are within 10% of "reality" is unscientific nonsense.
I have 8 years in the polling industry and it's pretty rare that polls are skewed so bad they're off by more than 10 points. And I never said 10% of reality, I said 10 percentage points of reality. There's a difference. And not even the worst polls I ever saw seemed to skew away from what one would expect from reality by more than 10 percentage points. The ridiculous US media polls that overpolled Democrats to produce artifically low approval numbers for Bush were probably off by 6-8 points in representing Bush's approval numbers. While Rasmussen which actually balances by party I.D. based on census representations was showing Bush at about 42-44% approval, the other media polling outfits had Bush at 34-36%. So while yes I believe US media polls are inaccurate, I don't think they're inaccurate to the tune of 10 or more points although the one that showed Bush at 29% at one point probably was wrong at about 9-10 points. But even if you want to assume this poll was off by 20 points, which you have no basis for believing, it still did not paint a rosy picture of what the Brits think of the US, our president or the WOT.
Anyway, to find out more about the poll click the links I provided.