My main takeaways from this historic-level performance (based on highlights below - have not rewatched match, but saw live)
(1) Near technical perfection. Almost every touch is calibrated, efficient and oriented to produce vertical momentum, engage tight situations at all-time level of proficiency.
(2) Elite physical sharpness and conditioning. Ronaldo is engaged and firing sharply and efficiently in his physical actions - sprints, jumps, turns.
(3) Decision making - exquisite interpretation of the play. Always picking out the right action and importantly - the right tool: left foot when necessary.
(4) Completeness as a footballer: wins first and second balls with his heading, wins duels, sprints from deep, sprints into space, ball carrying, play construction, scoring.
(5) Historical decisiveness. Scoring a world cup hattrick is practically unheard of. Doing so against a superior team puts this squarely in the category of historical performances.