Not opposed to any of that, and did say the trajectory of both is that Konate just needs to keep doing what he has been doing to be a world class CB throughout his career whereas Upamenco needs to work on certain aspects to reach that bar, however, it was the 'Robin' comment, that for me, suggested a sizeable gulf between them that I was surprised by.
On one level, I see what you mean as, right now, Konate is much more the finished article, but on the other, a sidekick is just that, and that's not really what I consider Upamenco to be, rather, someone who is at a different stage in his development and understanding of the game to Konate.
Perhaps it's more than a simple case of maturity at different rates, but to me, the story for the two of them is far from concluded as we've no real idea where either of them will max out and have no more growth left in them.