It depends on how you do it. Even in powerlifting there are chest/shoulder/"lat" benchers, there are tricep benchers (I am one of those), and mixes of in between. Someone like me doesn't really get chest growth out of just benching and doing supplemental and assistance work that has a direct positive affect on it.
If you want to build your chest for bodybuilding, then bench like a bodybuilder. Get a slight arch, somewhat wide grip (pinkie on rings should be good, maybe go closer, maybe go a tiny bit wider), keep your shoulder blades pulled back and bench using your chest. Instead of pulling the bar apart, try pushing your hands together to make a U with the bottom of the U being where your hands are.
Also Incline benching can be harder or easier depending on what degree the bench is at, the grip you use, how low you go, your strengths, etc. I'd guess moderate incline close grip would be around 75% of my max, so incline with a normal grip would probably be 80% if you have similar strengths as me and use a similar incline and other stuff as me.
Powerlifters also may or may not use a pause. I never pause when I bench unless I am trying to see what I could do in a competition, and that's only for roughly a second. I don't think I've ever in my life time missed a bench at the bottom.
As far as training for a good competition bench, I follow the westside style of training. I do very very little actual benching with my competition grip against only straight weight. All of the strength and hypertrophy is built through special exercises (variations that closely mimic the bench and put focus on weaknesses), supplemental work (lockout work or heavy tricep work in my case at the moment), and assistance work (smaller exercises for stabilizer muscles and just to keep the body balanced) with speed and technique work done by a competition style bench with straight weight, or against accommodated resistance on the light day or "dynamic effort day". I use a large variety of grips, quantity of accommodated resistance, ranges of motion (on the floor, rack lockouts), benches (flat and incline), and other training variables for heavy or "maximal effort" work. For someone like me who is built kinda bad for the bench press (longer than average arms) this is the best style in my opinion.
I have benched before the school year ended 315 at 185 at 17 years old, and I decided to go for a stint of strongman (didn't work out lol), and I am waiting until my next competition to go for a new record against straight weight. I am expecting around 335 in the 198 weight class once I have peaked.