Henrik was drafted as a highly talented center that is average in height but skinny, weak on his skates, slow and had to deal with some adversity early in his career. Eventually he was given a leadership role, had to answer uncomfortable questions, and became the highest paid forward on the team. His summer training program allows him to overcome his weakness and became a Hart and Art Ross winner.
Sure Petey has a nice 2.5 seasons in his career, but his build is still essentially the same as his rookie season, his strength and balance seemed to have gotten worse, his handling of pressure (at least with the media) has been unprofessional, he got a letter on his jersey but I don't really think he is living up to the expectations set by some of the previous leaders.
Are you sure Petey couldn't have learn more from the twins? Even just getting their summer workout routine would be huge for Petey.