Further to the earlier post, here’s a crop showing the cross-over point between those two lenses.
All other settings were the same (I think!) so it does look like there’s a difference in sharpness and definition there. The bigger zoom found it easier/faster to focus too. But then, I do actually need to update the camera body’s firmware (haven’t picked up a card reader to do this yet), so perhaps that will make a difference. Still don’t know when I’d bother using the big zoom, but it’s worth having I suppose. Perhaps as I play/study more I will understand when to use it.