if you know ANYTHING about bodybuilding, which you obviously do not, you would know that the "dennis james X-weeks out gym-pump pics" are a running gag within the industry because he NEVER looks ANYTHING close to that good on stage
To be fair, we can only see his arms and delt, and a bit of chest, and they all look good onstage usually too. But his gut probably looks massive and watery under that tanktop. If he took it off in the before photos we'd see there's less of a change than people think, the only differenve is we can see his gut onstage.