Steve Smith is a great batsman. Top 20 already. Possibly even higher, but come on.
1. He isn't finished. Viv, Ponting and others all had drop offs later in their careers, and Viv especially for reasons I will soon discuss.
2. Runs are runs, but Hutton broke Bradman's record with the great man at mid off while facing an O'Reilly marathon. Can't back after the war and his horrific injury and faced Lindwall and Miller who had the new ball every 60? overs. And this is loosing. Major chunk of his prime to the war.
Lara and Tendulkar faced off against Wasim, Donald, Warne, McGrath, Murali etc.
Viv had to face The quartet in India, Hadlee, Lillee, Imran et Al. Sobers scored his greatest innings vs a young rampaging Lillee and had to contend with Trueman, Benaud, Davidson etc.
Besides Steyn, who did this era have? Anderson and the Indian spinners at home are good, even very good, but does it quite measure up the the guys mentioned above?
3. Like Viv, he has a magnificent eye, but less that perfect / different technique. When his eye starts to go, unlike Sachin, he wouldn't have that perfect technique to rely on.
I am not reading him down. I also watched an unbelievable test series performance, but he's being appointed best after Bradman, ever. And growing up watching Richards, Lara, Sachin and reading about and seeing Hutton and Sobers (the seeing in particular) I personally can't place Smith above them, at least not yet.