Intalio BPMS is by no means "Zero Code", but it does provide a much more complete package for building sophisticated human task and service orchestration applications.
In my experience, jBPM has typically been more focused on Java developers who want a Java-based embedded workflow solution. Although jBPM has been evolving quite a lot, it doesn't provide the same level of functionality and support out of the box.
For example,
Intalio provides drag-and-drop authoring and integration of Tibco General Interface (GI) AJAX forms within their Eclipse-based designer, which allows someone with fairly limited JavaScript knowledge and a DOM reference to build rich and interactive forms. The latest version of their BPMS provides enhanced rendering on mobile devices.
Intalio provides an easy to use graphical tool inside the designer that provides the ability to easily transform data, create messages, variables, conditions, etc.
Intalio provides a sophisticated workflow suite that provides user authentication, task management, an administrative console, user dashboards etc.
Intalio will also offer (for a fee) an integrated BIRT based reporting tool, a Drools based business rules engine, integration with LifeRay, Alfresco etc.
It's also worth keeping in mind that Intalio has had over 10 years in BPM, a strong management team, and an enterprise grade support infrastructure (ticketing system, phone support, etc).
Full disclosure: I run a VAR and System Integrator that offers Intalio consulting, training etc.