I don't see the comparison, but I will say that KD didn't consider the impact on league balance when he decided to sign with the Warriors. I recall Stern negated Paul signing with the Lakers for that reason, though Stern had the leverage because the league owned the NO team at the time.
The effect of KD signing with GS, and many of the other FAs stacking the other top teams, the Spurs and Cavs, is to make it a 2 or 3 team league, at least in the near future. That does not bode well for Silver's NBA. Isn't one of the strengths of the NFL the parity the league enjoys, by virtue of it's hard salary cap as the bottom line?
Silver would do well to discourage this kind of FA stacking, by making it difficult for teams to unload players like ballast during the FA period.
This probably belongs as a separate topic, but I think the KD situation raises the issue, which has gone unmentioned in the media.