For a long time, the opinion of parents is highly authoritative for a child, so adults should choose their words very carefully.
Sometimes, using ordinary expressions, you can "gift" children with complexes and other unpleasant "bonuses".
You shouldn't use such expressions, because they are extremely painful for children. It doesn't matter what your goal was when you compared your child with other children.
The child will hear that he is worse than everyone else and will lose motivation for development.
Neither adults nor children want to hear this phrase. Parents who say it are simply "showing off" in front of the child, showing that they were right about something.
But for children this information is completely useless.
Moreover, this attitude can lead to children simply stopping listening to what adults say.
Experts believe that it is not only the meaning of what is said that is important, but also the form you choose to express it. Children may not perceive a phrase if it is expressed in a rude manner.
Also, any child reacts badly to shouting. Therefore, try to communicate with the child calmly, choosing words for your thoughts.