What makes you say thier diets suck? From what I've seen they eat well but are able to "cheat" more because of what they do concerning excercise.
I played college ball @ a 1-AA school on a campus where the jets trained so I got to see 1st hand how they ate.
As for the training...Our training was alot of compound stuff (cleans, squats, deads, etc) followed by single body part stuff. We had alot of machines as well as free weights and so did the jets. Most of the machines are there for isolation and injury prevention. We also did tons and tons of interval drills...agility, sprints, position specific drills (some for form others for function). We didnt really follow a set workout. Alot of colleges post a generic workout on thier websites for aspiring athletes etc. to follow but the players recieve different workouts. We would get into the gym and there would be somthing on the boards for each position...or if somthing worked well for a specific person one of the strength trainers would give them a seperate workout. We also did a TON of joint strength type stuff with bands and resistance (especially my position DB). We had some nasty core workouts too. I know from the players at my school that have gone to the league as well as pros ive met by chance or at pro-days that thier workouts are similiar but more personalized. Intensity was key...i've noticed since im back in a normal gym recovering from a car accident that regular people dont have the intensity that atheletes do in te gym. People can copy a workout but if they level of intensity isnt there then your not gonna see the results.
Also...forgive me if I insult a few people here but the "genetic freak" thing is crap. There are a few people in college and the NFL who dont have to put in the work that everyone else does to have the ability they do but most people just work thier asses off. Most people on this planet don't have the work ethic they have...these guys have been working thier entire lives toward one goal. So yeah...there are a few people gifted enough not to have to work hard (besides my height and weight I was probably considered gifted with sub 4.3 speed and a rediculous vert) but for the most part its a group of super-motivated guys who work thier asses off to make themselves the way they are.