Yes and No.
When you think about it, you're probably flipping a song you really enjoy anyways. So in the end you'd think no matter what you do it's not going to be as good.
But on the other hand you're taking something artistic and making it your own. If you do it well it's actually in another class of music...there's nothing like sampling.
Usually when I loop I don't feel as proud of a track when comparing it to chopping, layering and ect.