Would cutting my body fat bring out any chest separation or do I just lack the mass due to genetics?
My weight is around 170.
matt, I love ya brother... youre a wise dude and I have enjoyed reading your posts for years. Sometimes I agree, sometimes not, but i always read.
That being said...
I have shit genetics myself - I was 25 years old and a shitload skinnier than you were in that pic. 120 pounds at 5 foot 10 before I started lifting consistently. And today, I'm not a bodybuilder, but i look like a new person. I'm gonna throw my own suggestions at ya, based upon what i've seen in your training clips and what i have learned. This is my own opinion, of course, so i may be full of shit. But I'll give it a shot man...
Your training form is too sloppy. you move a ton of weight in your youtube training clips, but it's all momentum. Just slow it down and reduce the weight by 25% and pause/contract on every rep.
Your shoulders and triceps are why you bench 315, not your chest. Use pre-exhaust 15 reps of slow DB flyes, THEN hit your bench in a super set. You'll pre-exhaust your pecs so they'll do some work in the beching. Your shoulders are incredible but they're doing the work when you do chest - think about frank mcgrath - biceps so good he can't train back effectively.
Diet... you shouldn't be thinking of 1200 vs 1800 calories... you should be thinking of "4 meals of a big pile of beef/chicken, carbs and gravy, 2 protein shakes, and 2 big ass garden salads" each day.
Being hydrated - HUGE problem there. Just carry a water gallon everywhere with you (tacky, sure), but make yourself drink it every day. One gallon a day. Then you'll get to 1.5 gallons, then maybe even 2. it's not tough to do.
I wouldn''t worry AT ALL about losing body fat to get the chest showing better. I'd be more focused on eating a shitload of food, drinking a ton of water, using creating 3x daily, and hitting pecs every 5 days with prexhaust. Clean up the form, stop worrying about how much weight you're moving. Just focus on using shit heavy weight for 6 to 8 perfect reps with no shaking, NO MOMENTUM, etc.
I very rarely give any advice on training cause hey, I'm as full of shit as anyone else and I'm no expert. but we're in about the same boat. You just don't look THICK to me. Drink water, train slow, eat big, and just slow down. Stop thinking about getting diced. Anyway, that's just my 2 cents. Good luck in your journey.