Last I checked, Rove is merely an advisor to the president. He represents no one but himself. The Traitor Durbin (D, IL) on the other hand, is a U.S. Senator. When he speaks in his official capacity, he is speaking for the State of Illinois.
Furthermore, what Karl Rove said may have been insensitive and maybe even unwarranted, but The Traitor Durbin commited Slander against the troops at Guantanimo Bay at best and Treason agianst the U.S. at worst. His lies have bolstered the terrorists war effort and emboldened them in their fight against U.S. troops.
In other words, Rove may be an insensitive boor, but Durbin has committed a capital offense. Any comparison of the two is pointless drivel.