Who is the bigger bust? As of now, they have the same amount of years in the league. Here is the career stats for both:
4083 yds 18 tds 23 ints 52.1 comp% 65.2 rating
3666 yds 14 tds 36 ints 48.4 comp% 50.0 rating
Leaf clearly has worse stats, but he was the #2 overall pick and Jamarcus was #1. Jamarcus also made waaaaaaaaaaaaaaaaaay more money. Leaf was more of an a$$ to the media, and was very intense, while Jamarcus threw his entire team under the bus and had the worst work ethic of all time.