Here's the methodology (also available on the website):
1. Loading time: Fully loads the entire text and ready to scroll.
2. Memory use after load: Memory used by the app after loading the text.
3. Scroll jump: How fast the app scrolls when dragging the scrollbar to a far position.
4. Resize: How fast the app resizes after scrolling to the middle of the text.
5. Select all: How fast the app is at multiple operations: Select all text, cut, paste, undo, redo.
6. Editing: How fast the app is at typing at the middle of the text?
7. Memory use second time: Memory usage after doing all the above operations multiple times.
8. Binary size: Binary size of the app.
9. Cross-platform: Can the app run on Windows, Linux and macOS?
I think these are very fair benchmarks. And objectively speaking, both Bear and Craft didn't perform well (well, Craft couldn't load the text since it has a limit on the amount of paragraphs it can load).
EDIT: Just noticed you signed up! Thanks for that! BTW, I did try Anytype's iOS app and it was very smooth compared to the web/Electron one.