I've also been somewhat influenced by the argument that draft mistakes are typically made high in the draft when you draft someone hoping to be a #1 who turns out not to be able to carry the load. Better, I've heard some draftniks argue, to draft someone you're confident to be a great role player than struggle to force a (perhaps not well-rounded or inefficient) player into a number one role on your team just because they are drafted high and you need a #1.
Whether this applies to comparing players like Ace, Tre, Kasparas, or Kon, I can't fully say -- but maybe some of the rest of you have a better perspective from which to judge.