Best Nodes is part of a list of Nodes. Simply a specified number of Nodes that fullfill the criteria to be he first ones in that list.
Worst Nodes is a result from the same list, but these are the latter ones.

So All Nodes sorted by reputation, posting date or authors name or whatever might be the name of the list where both above are taken from.

So let me see and sort that list as I like to and Erudils Nodes might be in there among the the top 50 forever.
Beside that I think as some nodes from discussions are not strict perl related we might have to consider what we put in our LIBRARY. Only the best or most helpfull and instructive nodes about perl or so.
But I agree. I was like getting sad when I've seen Erudil's There can be only one! goin down and down.

Have a nice day
All decision is left to your taste