Styles make fights and styles make boxers. Ali was the best pure boxer of his generation and also had the best speed, reflexes and ring smarts. Just like Joe Louis was in his generation and of all time.
"A child does not learn to squat from the top down -- in other words, he does not suddenly make a conscious decision one day to squat. Actually, he is squatting one day and makes the conscious decision to stand." - Gray Cook