I see some people comparing Axl's performance in AC/DC and Guns.
Well, I am vocal coach for 20 years and I will try to explain what happens.
My english is not great, but I hope you understand.
The AC/DC songs are in a much more favorable range for the rasp, for the current Axl situation, than the Guns songs. They are in higher register and the melodies are more direct, less worked. See Thunderstruck or Back in Black for example.
Axl lost the natural rasp in the middle region. This will never return. The Guns songs abuse this region. The last part of Estranged is a good example of what I'm talking about. Even if he tries, he will not be able to stare at that pitch. It will sound forced, ugly.
Guns melodies are much more well composed, have more tonal variation and there is a region in Axl's voice that accompanies it anymore as before. Unfortunately it is the range most used in the Guns songs. The medium-high, with drive.
Axl is giving as much as he can. His voice changed and will not be as it was before.
If he insists on putting the rasp in the middle parts, he will blow his voice.
He must have heard it from a professional.
And he's doing the right thing.