It's too early to say he the greatest but Him and his brother are probably the best role modle for boxing since Ali.
Their not just fighter and their realise the world is just soo much Bigger than being famous and making alot of money.
I love tyson, liston, joe fraizer, larry holmes, marciano as a boxer.
But I admire Ali and the Klitschko people as a role model as well as a boxer