Almost any web server can saturate its network link if its role is limited to serving statics.
Originally Posted by 0xBADCODE
Apache is rarely the first thing to fall down when a site exceed's capacity. When was the last time you went to a slashdot'ed site and exceeded the HTTP timeout? The vast majority of sites return a 500 (when the PHP/.NET/java middleware tips over) or a "MYSQL: Too Many Connections" when the DB tips over.
I'm not saying Apache is perfect and Nginx is horrible, just that you present them a manner neither deserves.