"Confidence of a 4-year-old in a Batman suit" is a phrase that is used to describe a person who has a powerful sense of confidence and self-assurance. The phrase is a reference to the way that children have a sense of self-confidence that is unshakeable and unfaltering. When they put on a costume or outfit that they love like a Batman suit, this confidence is amplified, and they feel like they can take on the world.sense of confidence. They can approach any situation with a sense of self-assurance and are not easily intimidated or swayed.
In short, "confidence of a 4-year-old in a Batman suit" is a phrase that said to describe a person who has a strong and unshakeable sense of self-confidence. It is a compliment that indicates that the person can approach any situation with a sense of determination and self-assurance.