Based on your definition of a good feud, what does that make Austin/Rock?
But to keep it a buck, it's an objectively memorable feud -- I will never forget when Rock tossed his ass off that bridge -- that defined an era, but it wouldn't crack top 10 on my list of top feuds based solely on what I think makes a good one.
However, there's no way anybody could make such a list and not have it on there in general. I concede that.