Amitabh Bachchan is an ardent fan of Bal Thakrey. Remember the statement of Jaya after Raj attacked (verbally) her husband?
For Raj to attack Amitabh is, perhaps, politically correct.
Balasaheb's paper also endorsed Raj's views. Later statement by Balasaheb about Amitabh being a national figure etc. was an after thought. He did not reprimand his editor for writing against Amitabh.
There is no comparison between Rajanikanth and Amitabh. I am not referring to acting prowess. Rajani acts in Tamil films and makes money from Tamil audience. Amitabh does not work in Marathi films. Amitabh works in films made in rashtra bhasha.