You can say that, but I'd say that they're around the same level in accomplishments even if you give Murray the edge. Unless you count draws, and close fights, I only credit wins when I credit some for their accomplishment. Either way it just shows that GGG's best win couldn't beat Ward's weakest "elite" opponent, far past his prime.
Abraham won 115-112 to me. Murray was busier but landed lots on abrahams hands. Had it 7 rounds to 5. murray realy didn't do anything in 12th even his corner said that he must finish fast / strong.