WildFly includes a new cutting-edge web server, Undertow. The number of ports used by the different subsystems has been considerable reduced thanks to the HTTP upgrade feature. Also WildFly is Java EE7 certified, meeting both the Web and the Full profiles (JBoss AS 7 is Java EE 6 Web Profile certified).
Take a look at them by yourself with the Bitnami WildFly deployment options. Bitnami already provides ready-to-run installers for Linux, Windows and Mac OSX , virtual machine images and cloud images for the Amazon EC2 and Azure clouds.
You can learn more about the Bitnami WildFly configuration on our wiki.