I could see some non-Muslim Asians maybe swing towards him though. The kind of Indians who liked Modi for example. That pro-rape presidential candidate who was doing well in the Phillippines also seemed pretty Trumpist.
Yes, like I said, Asian Republicans LOVE Trump. Appeals to law and order go a long way. And as much as Trump has gone after Asian countries (like China and Japan), he hasn't explicitly gone after Asian Americans yet. And most Asians have little love for Blacks or Latinos.
Now I don't expect this to translate into actual gains, but I don't think Trump will perform that much worse than Romney here.