I think CX is way more likely to go bankrupt, because it only lives off international flights, and there will be very few of them in the upcoming months. Since they are foreign owned, I am not sure either Hong Kong or Chinese govt will come to their rescue.

Most of ANA/JAL flights are domestic flights inside Japan, they still operate, and Japan does a better job controlling the virus than most of the outside world (although they are not out of the woods yet). So in terms of a possible bankruptcy, ANA/JAL should be a safer bet.