Given the huge margins of error in their methodology, the differences seem too small to justify a headline like that. They aggregated all sorts of noisy data sources (one even being the number of hits for a web search!), and found that C has pulled ahead of Java by... 0.007%. Whatever MOE you want to put on their figures, I'd be willing to be it should be more than 0.007%... probably >1%.
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Given the huge margins of error in their methodology, the differences seem too small to justify a headline like that. They aggregated all sorts of noisy data sources (one even being the number of hits for a web search!), and found that C has pulled ahead of Java by... 0.007%. Whatever MOE you want to put on their figures, I'd be willing to be it should be more than 0.007%... probably >1%.