*yawn* You'd have to ask him as it's not clear to me...perhaps it related to something he and the author of the article were talking about earlier that wasn't included in the article. You'd have to ask Robertson or the reporter.
It is true that the Bible says no one sin is greater than any other. But, personally, I would have found it much more disagreeable for some woman and my husband to have committed adultery than I would find the shoplifting by a stranger of a small item from a department store. While God may hold all sins to be equal, except for that part about forgiving 70 x 7, I don't think He would be particularly put out if I were to be much more hurt by the first sin than the latter sin in my example. The first would have caused a great deal of travail and chaos in my own life whereas the second would not. Moreover in our human endeavor to mete out justice fitting of the crime, we do not hold all violations to the same punishment. Now having said that, nowhere in the Bible, nor in any other ancient writing I have dug up, have I read any description of human punishment in the afterlife that remotely resembles the various different levels of hell in Durante (Dante) Alighieri's The Inferno. That is a pure fabrication. The Egyptian version of trials of the afterlife were not permanent but were tests the human had to pass to make it to a better place. And I also don't recall any Biblical account of purgatory. Not saying it isn't there somewhere, but I suspect that is more an invention of men, other than Jesus, to give some explanation of what happens to innocents who have not had the opportunity to repent of their original sin.
We react to sins as humans. God reacts to sins as God. That is the basic difference.
I don't think God finds all sins to be equal. I don't even think that the same sin committed by different people will be considered equal as the circumstances and motives and remorse can be quite different.
There are venial sins and there are mortal sins.
The latter ones also differ in the degree of responsibility. If one has abusive parents who throw him/her away after 18 and never are interested in their offspring, I do not think that if he/she refuses to help his parents eventually will be judged in the same way a s somebody whom his/her parents loved, cherished, spend their life for and the one became a jerk who just ditched his/her parents and never looked back.
It is not that black and white as it seems.
It's ok if you think that.