In 9/15 cases PHP is >= 2x faster In 6/15 cases PHP uses less memory
As the webpage states "a white bar shows which language implementation had the better time, and a black bar shows which had the better memory use".
More flattery - in context "most" is not ambiguous, it's vague.
As you are saying how to read the graph, a specific example will be more helpful than a vague summary.