Let's take a look at the basic settings of these two ninjutsu. Spiral Pill is an A-level endurance technique developed by four generations of Huo Ying Namikaze Minato, inspired by Bijyudama (Yin and Yang are mixed in chakras at a ratio of 2:8). It is declared that the tearing force generated by high-speed rotation hurts the opponent's ninja skills and can also destroy the opponent's chakra!
Thousand Birds is a class A Ninjutsu developed by Kakashi in the dark period. Later, as Sasuke's teacher, Kakashi gave this endurance to Sasuke when he took the exam. Thousands of birds use lightning to shield chakra from high-intensity current, which is a ninja skill in their hands. It has a very strong penetrating power and can break my absolute defense.
Judging from the level, these two ninjas are both A-level ninjas, basically at the same level. According to the types of injuries, Thousand Birds belong to the piercing flow, while Spiral Pills belong to the destructive flow. There is such a plot in the animation that Sasuke and Naruto attack the bucket with their skills, and Sasuke directly penetrates the bucket with a thousand birds.
Naruto only opened a small hole on the surface of the bucket, but a big hole has been opened on the back of the bucket, which is the difference between the two ninjas. However, some netizens said that the protagonist in the blood is always stronger than the male two! If we dig deeper, spiral pills will obviously have better endurance than a thousand birds, for good reason.
Because Spiral Pill is a growing endurance skill, Naruto has developed many stronger endurance skills based on this skill, such as Dayu Spiral Pill, Fengdun Spiral Pill shuriken and so on. , which are super A-level or even S-level endurance skills! Therefore, there may be no difference in the intensity of these two endurance techniques, but the spiral pill pays more attention to growth, so it is stronger