Aren't they quite different creatures, though? It's clear that language is not the only determining factor, since Sinatra is so much faster than Rails, and the

Aren't they quite different creatures, though? It's clear that language is not the only determining factor, since Sinatra is so much faster than Rails, and the Node example is so much faster in a cluster configuration. If the experience of programming for Sinatra, Phoenix, and Martini are very similar, it's fair to compare them (though maybe benchmarks may not be super useful, given that the database layer is likely to be the bottleneck in most large site deployments rather than simple routing and other stuff being compared here). If Negroni is very different (I don't know that it is, but a brief perusal of the site for Martini and the github for Negroni indicates very different experiences) then it's possibly no more useful a comparison than Rails to Phoenix.