Such as what? A real difference - or a personal failing. be specific.
Peter's deeds or policies toward unconverted Jews and his still hanging on to being Jewish. Galatians 2 tells what happened. Paul had to correct Peters behavior.
But looking deeper were the chosen twelve immediately after The Resurrection doing what they were actually told in The Great Commission? Not really. They were staying in Jerusalem living and dwelling with each other until the death of Stephen which began the persecution in earnest and which resulted in The Gospel reaching far places. The Shepherd was struck and the flock scattered. The Disciple and Apostles as well were corrected by The Holy Spirit.