There is no difference in output quality, since the same source clip is used in both cases. The only real differences are in the control over the pan and zoom that each tool gives you.
You can think of the P&Z tool as a quick and easy way to add that effect to a clip, and there is also the ability to customize the starting and ending locations, as well as the zoom level.
PiP keyframes will give you absolute control of all aspects, including doing multiple directional changes and/or zoom levels, and also pausing and making any other changes you'd like to add.
This message was edited 1 time. Last update was at Sep 07. 2019 21:26
YouTube/optodata
DS365 | Win11 Pro | Ryzen 9 3950X | RTX 4070 Ti | 32GB RAM | 10TB SSDs | 5K+4K HDR monitors
Canon Vixia GX10 (4K 60p) | HF G30 (HD 60p) | Yi Action+ 4K | 360Fly 4K 360°