Two holes in that explanation though...
1. Naruto and Sasuke stopped running, and were not even going their full speed when they were, in order to look at Sakura who was behind them, and that leap :lol that is basic ninja speed which has been seen by almost every shinobi in PART 1...
2. That "dot" that Sakura was in the panel, wasn't even a dot it was much bigger than a dot and also about Sasuke and Naruto not being within the blast radius, they really were...
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In the above image, you see that Sakura is smaller than the Juubi clones
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Now look at the explosion, each of the Juubi clones are actually dots on the panel that says a lot about how large the radius of the blast is... Which brings me to my next point...
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The distance Sakura is from Naruto and Sasuke isn't even great as other, slower shinobi's have gone an even greater distance in an even shorter time...