Sorry, don't have any easy to digest comparisons. But there is for example the Model-View-Presenter pattern which has superseded MVC, and is actually closer to what most PHP frameworks practically do. http://richnewman.wordpress.com/2008/02/26/model-view-presenter-variations-on-the-basic-pattern-introduction-to-cabscsf-part-24/
Articles like http://c2.com/cgi/wiki?TemplatingInPhp assume that PHP itself is the best model for webapps, and patterns instead of templates don't add enough benefits.
Besides PAC, there is also Model-View-ViewModel (which is currently a hot topic in C# but not in PHP) and and Model-Delegate http://c2.com/cgi/wiki?ModelDelegate which expand upon MVC. But they might not be as useful for generic webapps either.
