Pathfinder 2e has a number of things. The prewritten modules are mostly really good OOTB, unlike a lot of D&D modules. Also they have robust encounter building rules which make it easy to balance things correctly as a GM. Magic items have levels which tells you how balanced they are for a group of a certain level. Stuff like that where it's really easy to judge what can and should be included in your game.
Interesting, because I wouldn't thought about D&D/Pathfinder as game easing the GM job but indeed, well written module/campaign are really helpful, especially for a busy GM. Also a well balanced system is also a great tool
As someone who has run both, the organization of content and rules in the books makes a huge difference. D&D will reference rules that show up in other parts of the book with even telling you that it's doing so, or what page to jump to for the rest of the information. Meanwhile PF2e is free open source and has all of its game content in a fairly easy to browse free database online.
The encounter building rules are what I was going to post. I've never been lead astray by them. A lv +2 enemy is hard at level 2 and 20, though the lv 20 party of course has more tools and resources to overcome it, and the monster has more wrenches to throw into the monkeyworks.
I wish I liked the modules more. They're certainly well put together, but I just can't run stuff out of a box; I feel an obligation to tell the story instead of playing the game, like it was a movie or something.