I have come across two things that I can do in InDesign but can’t find a way to do in Pages. First, I can’t find a way to make objects snap to grid lines — not crucial, but you can do it in InDesign and it’s a help. Second, I can’t find a way to vertically justify the text in a column.
Basically, the lack of these two functions means that aligning the bottoms of side-by-side columns of text takes a lot of fussy tweaking instead of a few quick actions.