His wife not leaving him really has nothing to do with what he did. the comparison to the Jay Z incident is apples and oranges as well. If there had been someone to get between the two of them to keep him from knocking her out then the whole thing never materializes. Nothing she said should have resulted in him hitting her, for that is just self control. Even if she attacked him he probably could have handled it without laying her out. To put any blame on her for his actions is wrong, and even if they did kiss and make up, are going to counseling, and end up having a long happy marriage, the league should have still set the bar higher for things like this.
The NBA is finally climbing out of the image of it being full of "thugs" and "hoods" and the NFL would be wise to crack down hard on any activity which paints them in a bad light.