Fair enough. But my point was that the variance on total value received by both sides remains huge, possibly dependant on the pingpong balls. Even if Tatum proves better than Fultz in the long-haul, those are essentially "sunk costs" at the moment. What is undetermined is where we fall between these two extremes, which while unlikely are not inconceivable:
1) Philly gets 2018 #1, Boston gets 2019 #10
2) Philly gets 2018 #6, Boston gets 2019 #10
(...)
3) Boston gets 2018 #2, Philly gets 2019 #10
Between Door #1 and Door #3 is an enormous swing in expected future value to the teams, given the theoretical 7 years of team control, 4 of them below-market. That dynamic just isn't in play with the Kyrie trade (who is mostly a known quantity), or really any other trade that comes readily to mind* since Billy King. Ainge and Celtics Nation have a whole lot riding on those balls.
* I freely admit I know maybe a tenth of what Port Cellar regulars know about recent trade history, if that.