Most people have anterior pelvic tilt, which can make a "Gh gut" appear worse than it is. Anterior tilt is just a posture issue that's correctable (think some ghetto bitch trying to make her ads look bigger). Kelly Starett has a video or 2 on YouTube about it i think. He covers ktnin his seminars at least
Yeah an anterior pelvic tilt is much easier to fix...essentially a weak lower abdomen that gets worse when guys arch their lower back when they squat, deadlift, row, etc. The entire transverse abdominus should support the spine when training, and the lower back should remain neutral. If you do arch and lock your lower back when you train, when you attempt to keep the spine neutral, usually you have to drop the weight a bit as you lose some leverage. So there's a little ego involved, but it is definitely worth it. If you look closely at the pic of little Dallas from a few years ago, you can even see that his biceps are developed differently, one bigger and rounder; and the delts too, the tie-ins to the biceps look different from one side to the other. His lateral pelvic tilt and the functional scoliosis are the reason his arms and shoulders (and everything really) are not as proportionate as they should be. An anterior tilt (swayback) won't cause as many problems, but after years of training heavy that way, spinal fusions and bulging discs are a big risk.