That's where we disagree. Time won't tell. There's nothing Chandler can do that will affect whether Dallas overpaid or not relative to my argument. That's what I've been trying to say. The only thing that determines that is what minimum offer it would have taken for Jackson to trade Chandler back to Dallas. If this seriously was the only way Dallas could get Chandler, then they paid market value, and I approve of the deal (but still lament the timing) even if Chandler bombs and Larkin and the picks become good players. If Jackson would have taken less, then Dallas overpaid, even if Chandler is a DPOY. And it's no small thing, as Dallas gave could have really used those assets and that cap space if they could have preserved it.
That's why the issue is murky. I believe Dallas could have gotten Chandler for a more favorable deal in terms of assets and timing. There's no way to prove that, though. But that's the case for all trades, and we still judge them based on perceived market value. I don't see why this is different. But yes, we can agree to disagree.