Jason-
That's not splitting hairs, that's stating the obvious. For any kind of climbing, what is widely considered the current hardest route is the hardest reported (if it's not reported does it exist? If a tree falls in the woods and no one can hear it, doe sit make a sound?) - and inevitably there will come some route to surpass it in difficulty. Unfortunately the routes that preceded it, somewhat irrespsective of their quality, will still see traffic as local testpieces, etc.