http://www.youtube.com/watch?v=2elFnTI46a4 (Jefferson highlights)
http://www.youtube.com/watch?v=FkrLwXGJa1A (Cooper Highlights)
According to 247 sports, both are listed at around 6'2' 180 and 4.56 forties each. Eerily enough, both wore #2 in high school. However, it's their talent and skill that are remarkably similar. Both look incredibly gifted with the ability to take a short pass for big yardage. Both are very tall, athletic wide receivers who can produce. That said, judging by their high school highlights, it appears to me that Jefferson has better hands and is more fundamentally sound at this stage. Scary to think about.