Originally Posted by Nikachu
You need to regularly play other inflated players for your rating to rise with it.
But other than that at his peak he was a very healthy 2817. You're just comparing him to his current downswing.
He peaked at 2817, however in January this year he was 2799. At the 2010 World Championship he was 2787. January 2008 he was 2799. January 2006 he was 2792. And so on. Seems like he's stayed in the same range for quite awhile.