Could Christ Sin?

Could Christ Sin? In the article "Apollinaris and the Doctrine of Christ (1)" (Standard Bearer, Jan. 1, 1999), Prof. Hanko states that it is an error to believe that "the temptations of Christ were real only because Christ could have fallen into sin." My question is this: If Christ in His manhood, in His humanity, while He was walking around on earth could not have sinned when Satan tempted Him, how was His perfect obedience to God the Father worth anything, except that He was some kind of...