supervisor is great, but if you want to host multiple applications the best way would be the uWSGI Emperor http://projects.unbit.it/uwsgi/wiki/Emperor

Regarding the benchmark, it is a bit outdated and the apache+mod_wsgi analysys/configuration is totally wrong (i am one of the uWSGI authors, but mod_wsgi is great, and seeing it blasted wrongly in that url is a bit disappointing)

By the way, do not choose your application server looking only at performance.really.