Well it's good to see that they BOTH followed in their Fathers footsteps, but regarding Arnie's children, his oldest son has POTENTIAL and Structure to become something physical, but then again why should he if he doesnt feel the need?
Just judging from pictures, but to me it seems like Lou's sons have more of a Jersey Shore-mentality while Arnolds oldest have the potential of studying at Oxford/Cambridge and maybe become really successful.
Life isn't all about bodybuilding you know, even though we all are here on Getbig.
I'm sure Arnolds oldest will do fine in life, muscles or not.
The jury is still out on Arnold's youngest though, seems like he has a penchant for an abundant amount of carbs and fatty-acids. He is still young though.
Anything can happen, but the Estro seems to be strong in that one.