I have to point out that what you say applies only on the "Fortunes" benchmark. On the others benchmarks, Java always comes before PHP. I'll also add that most people don't use the top performing frameworks (most people use Laravel and Symfony for PHP, which are near the bottom), but that applies to everything here.
I wasn't clear, sorry. What I meant to say is that most people use Laravel and Symfony, which are nowhere near the top performing PHP frameworks on the benchmark.
[edit]: clarification