The #1 aspect of Writer that is superior to Word is in handling floating inline images. It isn't rocket science, but Word seems intentionally designed maximally piss off the user:
1) Images don't actually end up where you drop them. You move it to where you want it on the page, then Word randomly decides to lay it out somewhere else.
2) Captions by default are separate from images, so you move the image and the caption stays behind. Worse, if you are editing text earlier in the document causing the image to move, the caption ends up in some other random location.
3) Images and captions in the body often end up wandering around the page and laid out overlapping the header or footer.
4) Sometimes you move an image or a caption, and it just vanishes. (It may not technically be "gone", but if you can't find it to click on it, it might as well be).
5) Anchoring to a specific page doesn't work if text stream position of the image isn't also on that page. Again, incredibly annoying if you are editing text earlier in the document.
6) Images are considered part of a paragraph for layout, sometimes resulting in half a page of whitespace on the previous page because Word randomly decided it can't fit both the paragraph and the image in the available space, and refuses to split the paragraph across pages.
7) If you click on an image and say "change picture" to replace the image with, say, an updated image of identical dimensions, it will forget that you had resized the image and force you to redo all the tweaking to sizing and layout you had already done.
Clearly, Word's image layout is stuck in 1995 because to actually fix it would break the ten billion Word documents already out there, but it is worth pointing out that LibreOffice has far saner and more predictable behavior in every case.
I wonder how many heart attacks have been caused by blood pressure spikes in frustration over Word's terrible, buggy, asinine layout algorithms?