To be a cut above means to be better or superior to others in some way.  بهتر یا برتر بودن از دیگران. 
مثال؛
She’s a cut above the rest when it comes to playing the piano. In a discussion about athletes, someone might say, “He’s a cut above the competition with his speed and agility. ” 
 ...  [مشاهده متن کامل]  
When comparing two restaurants, a person might say, “This place is a cut above the other one in terms of service and quality. ”