The question isn't about whether white or Asian actors should be used.
The main question is
When have we ever seen an American made movie with an all Asian cast.???
I think never...its time for a change

This movie was definitely poorly done. The only bright spot was the special effects. The movie doesn't answer this very important question..
What made John Connor so special that SkyNet needed to go back in time to kill him???? Its like the creators didn't watch the first Terminator or just forgot about it.