How are Ender’s behaviors and attitudes like Peter’s? How are Ender’s behaviors and attitudes like Valentine’s?

Although Ender tries to distance himself from Peter, there is a sense of violent abandon when he is pushed far enough. He has Peter's same intensity and ferocity when pushed passed his limits of patience and sensitivity. Peter, although sociopathic, also has the ability to lead. Ender excels at Peter in this. Ender is like Valentine in that he is emotionally sensitive and intellectual.