Here ya go:
Secondly, this notion of salvation as sharing implies -- although many have been reluctant to say this openly -- that Christ assumed not just unfallen but fallen human nature. As the Epistle to the Hebrews insists (and in all the New Testament there is no Christological text more important than this): We do not have a high priest who cannot be touched with the feeling of our infirmities; but he was in all points tempted exactly as we are, yet without sinning (4:15). Christ lives out his life on earth under the conditions of the fall. He is not himself a sinful person, but in his solidarity with fallen man he accepts to the full the consequence of Adams sin. He accepts to the full not only the physical consequences, such as weariness, bodily pain, and eventually the separation of body and soul in death. He accepts also the moral consequences, the loneliness, the alienation, the inward conflict. It may seem a bold thing to ascribe all this to the living God, but a consistent doctrine of the Incarnation requires nothing less. If Christ had merely assumed unfallen human nature, living out his earthly life in the situation of Adam in Paradise, then he would not have been touched with the feeling of our infirmities, nor would he have been tempted in everything exactly as we are. And in that case he would not be our Savior.
St. Paul goes so far as to write, God has made him who knew no sin to be sin for our sake (2 Cor. 5:21). We are not to think here soley in terms of some juridical transaction, whereby Christ, himself guiltless, somehow has our guilt imputed to him in an exterior manner. Much more is involved that this. Christ saves us by experiencing from within, as one of us, all that we suffer inwardly through living in a sinful world.
Bishop Kallistos Ware, The Orthodox Way
My point here is that trying to draw a line between Catholics and "everybody else" on this topic isn't really quite accurate because of the different views of the Orthodox and Protestants regarding "fallen" human nature, original sin, etc.