I wonder why he would show off his torn side in the side chest pose? 
SM
because his other bicep is torn and it would affect the pose.
this is the sort of thing that people like daddy waddy should learn.
when you perform a pose that emphasizes a particular muscle structure you need to keep in mind that you are presenting the whole physique at the time ie no point performing a side triceps like a chicken breaking free from a shell.
aesthetics.