Swany, what about when the original artist likes the cover better than the original?
An example would be Devin Townsend. He hear Annekes version of Hyperdrive and was like "damn...this is what the original should have been".
In most cases, I'd agree with you. But I disagree with the absoluteness of it.
An artist could have an idea for a song, but not entirely realize it. Then someone else could hear the song, realize what the artist was trying to do and then do it properly that lives up to the original intention that the original artist might not have been able to realize at the time.