The ability for multiple team members to co-author diagrams simultaneously when saved to SharePoint or OneDrive.
Determining if a portable version is "better" depends entirely on your use case:
Visio 2013 Professional allows users to link diagrams to live data from Excel, SQL Server, and SharePoint. Portable vs. Installed: Is One Truly "Better"?
Description of Microsoft Visio 2013 Viewer Service Pack 1 (SP1)
Improved templates for organization charts , network diagrams, and BPMN 2.0 support.
Despite newer releases, Visio 2013 remains a popular choice because it introduced the modern fluent interface and significantly improved cloud integration through OneDrive. Key benefits of this specific version include:
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