What is it with idiots hearing of toroidal props, that always get's them thinking "I know! I'll 3D print a prop and compare it to a bought one to learn if toroidal is any good!"?

1. different material with different density - your motor is moving different masses
2. 3D printing gives you rough sourfaces - meanwhile your traditional props have clean surfaces, because injection moulded
3. you'd need to compare geometries with similar properties - so same thrust at similar speed, while creating similar load for the motors

the internet is full of stupid people.