The score is not a raw average
A setup with two tens does not outrank one with fifty ratings averaging nine and a half. Scores are weighted so that a rating earned across many votes counts for more than a lucky pair — otherwise the top of the leaderboard would simply be whoever posted most recently.
You can compete without showing your name
Any entry can be made anonymous. Your setup competes and appears on the leaderboard, but your name, photo and reputation are not attached to it. The switch is on the entry rather than on your account, so you can be open everywhere else in the app and still keep this one private.
The component list is curated
Components come from a maintained catalogue rather than free text, and that is what makes leagues possible: a graphics card's league position is derived from what it can actually do, not from what its owner claims. If your part is missing you can report it, it gets added, and you are told when it is ready.
Comments belong to their authors
A comment lives together with the score it came from. You can edit or delete your own, and anyone can report one that crosses a line. Removing a comment never removes the score it came with — a deleted comment does not quietly change the standings.