Its possilble they thought of a better way to move the **** around then we can, they had some great innovative mathmaticians at the time. Its hard to understand this because humans are unorigional...
If your lifts have increased like that you have definately put some decent mass on, if i were you now i would document body part measurements every other month its easier to notice the gains then
...
Dont think this, its hard to notice gains when you are 20% bf + but he has clearly got wider, look at traps/shoulder they look fuller, its hard to tell from the pics he posted
But his farther instigated all of this ****, if it was just the son there he might have reacted differently and just looked throught the attendants stuff and left, so feel slightly bad for the son