Small world Overload. Just a little over a year/year and a half ago I got the royal treatment from his Holiness, The Mod. Personal messages with ramblings that seem to come from a crazy man or a heavy drinker. Deleted posts and some that were complety rearranged so that they presented an opposite meaning. Even had the honor of being blocked from posting for 2 week. I amoung many others.
A muscle area always acts as a unit. Any pressing off of and away from the chest requires the total effort of the chest/pec muscles, acting as that unit. Even dips, which are pressed/pushed down and along side the body, are a wonderfull chest movement.
Changing the angle of the press/push does not reduce the stress on the whole chest area, just the degree of the stress. Just saying that the degree of measured stress can change, as the angle of the exercise can. There is never any muscle isolation of any muscle group.
Inclines may demand more work/stress on the upper portion, so receive that much more tension than the lower portion of the chest area would. In that respect, men who favor that impressive delt/pec tie-in would want to pay more attention in incline presses (prefered with DB's). Men who want a better lower pec line might pay attention to Dips.
And some men can do flat benches and build massive chest, upper and lower. Muscle inserts, joint structure and bone length/structure will have a lot to do with getting results from any pressing style. If people would experiment with different grips, elbow placements and where the bar is lowered upon the chest area the common BP might be the only great chest exercise they would ever need. Good Luck
Side Bar: No big deal but wonder if candidizzle is related to Milo Candini?