IPreferPi
A Nonny Mouse
One trade doesn't always equal another trade being better or worse. Trades aren't made in a vacuum. Either way, the 10th overall pick is worth a lot more than the late first Arizona got from the Rangers for Yandle. Pool party is worth a lot more than Duclair was, and Klefbom is an already established second pairing D who has more value than a 2nd and a mid level prospect like Moore who was already going to his 3rd organization. Adding Domi changes the dynamic significantly but the other pieces involved are far more valuable than what went in the Yandle trade.
Given how Pool party has developed so far, I would say that his trade value isn't all that much higher compared to Duke's was at the time of the Yandle trade.
You're right, trades aren't made in a vacuum. But major trades that involve pieces like a 1D also really aren't made within a division.