If we aren't expecting a clone to have the same abilities...
Why are we expecting a linebred dog to have the same abilities?
You will never come as close as a clone.

While nothing in life is guaranteed; I don't think it's one person on here who hasn't looked at a ped like THESE SHOULD BE GOOD! And that's without even knowing what the dogs genetic make up is in reality. With a clone, you are certain.