Apparently they changed MCT to make that a technically legal connection, it's still very risky.

One thing I would say is that after arriving the AA flight, move very quickly (run if you have to) to passport control. Then take the lift down to the transit rather than the escalators. 30 seconds slower can be the difference of waiting an extra 5 minutes or so for the next transit to T4 Main.

All of that said a slight delay will make any effort you make meaningless.