You might add the following:
- Web Dynpro ABAP is flawlessly integrated into the SAPGui Workbench (SE80)
- Web Dynpro ABAP does not require open source add-ons like Eclipse for development
- Web Dynpro ABAP (might) leverage existing ABAP developer resources
- Web Dynpro ABAP is restricted in terms of UI features
- UI5 still lacks a proper IDE for development
- UI5 normally requires a more complex infrastructure such as Gateway (or HANA XS)
These factors could impede more rapid adoption of UI5 as the preferred "all-round" UI technology, at least among more conservative clients. Other issues seem to pop up every now and then:
Were the Fiori apps meant to be extended?
As for performance, it's not immediately clear who the winner is; this presumably depends largely on your scenario (application). I've seen indications pointing in both directions...
For now, it seems to point to WDA as preferred solution for "classical" ERP-based solutions to be run on workstations, whereas UI5 seems best suited for mobile and device-based (portable) scenarios.