But he says the 2012 Olympic champ will still be behind Fury because he has not boxed the same class of opponent .
Lewis expects Joshua to dispatch the undefeated Breazeale at the O2 on Saturday in his first title defence .
Lewis says the 2012 Olympic champ will still be behind Fury because Lewis has not boxed the same class of opponent .
Lewis expects Joshua to dispatch the undefeated Breazeale at the O2 on Saturday in his first title defence .