Her scores may have even affected the winner of the bronze as well as the silver. If she deliberately rated all other expected contenders for the gold lower that they deserved, she cheated them also
Another possibility would be to bring in another truly independant judge unrelated and unallied to either Russia or Canada to review and judge films of the performances if such films exist. If that is done, then truly only the performances done that night would reflect who truly has won the medal.
In the Canadians case, they truly deserved the medal while in the Russians case, there is and always will be doubt.
In so far as to which program was simpler or more demanding, If the Canadians correctly performed the movements that the Russians faltered on, the Russians have nothing to say about who was more deserving.
That *is* what they did. It resulted in a 4-4 tie, thus the duplicate golds.