Abraxas
Explorer
(This is a self-imposed situation, by the way. As I said before, I can sympathize with playing an under-powered character, but I have no delusions that "desire" to play an under-powered character equates to "balance.")
Ah, I was under the impression from your statements that this discussion wasn't about balance but playability. My mistake.
But your question hints at a lack of understanding of the actual power curve of CR. I would not generally expect a vast disparity of power between 17th, 18th, or 20th level characters without other major CR-skewing differences to widen the CR gap.
I believe I understand the CR power curve (I even followed along in the UK threads until they became annoying excerisizes in minutiae

Oh well, I think I'll go see if there's a DoD update yet.
Cya