John's son -Jai Courtney bad casting ? ?

Aaron Paul, Liam Hemsworth, James Badge Dale, Paul Walker, Ben Foster, Shiloh Fernandez, Milo Ventimiglia, Paul Dano, Steven R. McQueen, and D.J. Cotrona were considered to play John McClane's son. The role ultimately was earned by Jai Courtney.

I saw this movie and did not like the son or actor playing the part.
Later I find out who it is and he wound up in T5 ruining the character of kyle
reese! and he also has another lead in another big movie coming up, I forget
which one.
He is awful, no charisma and cant act, so how does he keep getting major roles??
I would rather any of the ones I bolded would have played the son in this movie.
It might not save the movie but it would then be ok .
What do others think of Jai in this?

http://tvtalk-your-show.forumotion.com/