You can't add "width" to your chest and his delts aren't wide they are big.
Sure you can. Steve Reeves himself claimed that a wider grip when doing bench press produced more width to one's chest (or perhaps more specifically to one's pecs). These web site articles all claim you can add width too:
http://www.musclehack.com/how-to-build-chest-muscle/Add Width To Your Chest
As well as focusing on the top, middle and bottom of your pecs, you should stimulate the sides directly as well. This helps add width and thickness to your chest. Dumbbell flies are perfect for this!
Dumbbell Flies
My favorite chest exercise! Here’s the proper form to use when performing them:
Keep your arms slightly bent at the elbows throughout the movement.
Lower the weight a far down as possible. You should feel a real stretch right across your pecs at the bottom of the rep.
Now push up again until your arms form an ‘A’ shape at the top.
http://ezinearticles.com/?The-5-Best-Chest-Building-Exercises-for-Beginning-Bodybuilders&id=9217554. Flat Bench Dumbbell Flys
Flat Bench Dumbbell Flys are designed to build well defined, massive pecs by isolating resistance on the chest as much as possible with strict training technique. Such technique requires the controlled movement of the dumbbells over your chest with your back and shoulders planted firmly on a flat or incline workout bench. This means you shouldn't try to do this exercise with excessively heavy weight (I suggest poundage that allows you to do 10-12 reps). Make sure that you don't jerk the dumbbells together with bodyweight or shoulder assistance. This type of cheating on training technique deprives the chest of the work it needs to grow and simply wastes time. If done properly, this exercise will thicken and shape the "pec-delt tie-ins" where your chest and shoulders meet to give your pecs a full and wide frontal appearance.
http://forum.bodybuilding.com/showthread.php?t=626330http://forum.bodybuilding.com/archive/index.php?t-367846.html
