Same as yours. The road to get stage ready is a sport. The stage itself...well it depends on how you look at it. From a judging/winning perspective it's not a sport i.e no objective comparison criteria.
However, from the perspective of actually being on stage as a competitor, flexing the hell out of every muscle so damn hard that you would get cramps were it not for the hours of posing practice put in, and damn near passing out from trying not to breathe too much so that your abs stay flexed.....yup sure feels like a sport!