Transfer speed of USB-C to Lightning on latest iPad Pro 10.5 Has anyone experience or estimates on what transfer speeds are to expect when transferring data to/from the latest gen. iPad Pro 10.5 using a USB-C to lightning cable? Scenarios might be


creating an iTunes backup
syncing movies, music and other media via iTunes
copying photos, videos using iTunes or some photo organizer app
transferring documents to apps using the iTunes app documents feature
...


USB 2 is really ancient now, and I expect a modern device as expensive as the iPad to offer faster transfer speeds than USB 2. So it would be great to know if the USB-C to lightning cable is worth buying. Thanks!
The iPad Pro 10.5"-inch model supports USB 3, so it is not the "ancient" USB 2 as you mention.

USB-C only refers to the plug, so it hasn't got anything specifically to do with the USB-C to Lighting cable - you can achieve the same, higher speeds using a USB-A port when using a USB 3 compatible cable and USB 3 capable port.