as pointed out numerous times, your delts are overpowering everything, even your back. not a bad muscle group to be overpowering. being the narcissistic mofo that you are

i am sure you're accutely aware of the importance of wide delts in terms of appearance.
however, if you're looking to get after the pecs, you need to learn how to keep the delts from taking on the load during your chest workouts.
my advice to you is to forget about which exercise does what for your chest and concentrate on 1 exercise that allows the use of heavy weights (to you) and puts you in a position where you can comprehensively hit the pecs.
i'll use the bench press for illustration seeing as you seem to like it so much + the fact that it is a good exercise IF done correctly.
take an empty bar and put it on the supports. lie back on the bench and put your feet firmly on the ground creating a good arch (yes, stay with me) and the feet well back so you have a good foundation from the base.
now here's the part where you deactivate the delts somewhat and activate the pecs:
retract the shoulders right back and down the bench towards your feet while spreading the lats. get it, got it, good.
DON'T LET THE SHOULDERS LEAVE THIS POSITION AT ALL DURING THE SET.
practise with the empty bar, slowly contracting the pecs as you lockout the bar. you should be really tight during the set and
NEVER hunch the shoulders at the top, which you shouldn't IF you are keeping those shoulders retracted back into the lats for the entire movement. when you look down the bench towards your feet end (which you should be and with your chin down) your chest should be pushed right out in bold relief.
2nd most important point: forget about how much weight your lifting and stop using power to blast the weight up, it'll be making your delts an offer they can't refuse and they will gladly take over from the pecs without you even being concious of it. move the weight slowly with lighter weights so you get a feel for using the pecs to squeeze together as you lock out the rep.
3rd most important point: forget about rom. you will probably be surprised how short the movement actually is if you're doingit as stated, but that's because you won't be rotating the shoulders and surging them forward at the end of the movement.
anyway, i know i sound like a wanker giving out 'advices', but just try it one time seriously and you will understand what i'm talking about. you'll get much better stimulation in the pecs.