Unfortunately there are several problems being pointed out with this benchmark:

* Some of the servers tested aren't designed to interact directly with clients over a network, and are meant instead to run proxied over a local socket behind something else like nginx. The benchmark is inconsistent in whether it actually does this, though, which makes the numbers useless for comparison purposes.

* Several of these servers use preforking architectures which assume the ability to have multiple workers available to service requests. Yet the benchmark deliberately limited them to only one worker, which makes the numbers useless for gauging actual peformance under concurrent load.