where are the performance metrics for 1.4 vs 1.3?

where are the performance metrics for 1.4 vs 1.3?

The release blog says "...jQuery Mobile 1.4. For this new version we focused on performance improvements" The upgrade guide has a LOT of breaking changes in this release. Unless there is a dramatic measurable reason to do so I would have to pass. Do you see this trend of jqm breaking backward compatibility continuing or is this a one-time thing to address performance issues? I heard the CTO of fameo.us say that jqm is dishonest when they claim good performance based on simple demo pages, when in reality 5FPS is typical in a real jqm app. I have used jqm since 1.0 and love the new responsive layout in 1.4. Unless I can offer real numbers around performance and stability, my company will likely be using Bootstrap for desktop and native for mobile.