Does it matter. Will increasing or decreasing my carb intake get me 20" arms? NO!! So, it doesn't matter.
Would it make a HUGE difference if I increased or decreased my carb intake for a nattie? Oh brother!
Then WHAT'S THE POINT OF WORKING OUT AT ALL!? If that's your attitude, then take your SHITTY GENETICS and get a new hobby!
I'm telling you that GENETICS are NOT as important as HARD WORK AND KNOWLEDGE! I have SHITTY GENETICS, by most standards, as I have a very THIN, ECTOMORPHIC natural frame, I still have a 28 inch waist!
Nutrient manipulation is one of the GREATEST TOOLS in your bodybuilding arsenal as a natty bodybuilder, don't give up before you even start!