It would be a lateral move if they have the same expected value over the next 10 years.
They do not.
I will admit that I am someone thinks that IT should have gotten a max deal for an all-in type play, but I also knew that the last year or two of the contract would have sucked.
DA mentioned timeline. What does that mean? Well, assuming IT & Kyrie are your point guards until their respective retirements, IT would project to give you what.. 3, 4 great seasons? Kyrie can give you closer to 10.
That gives Tatum and Brown a chance to overlap their primes with Kyrie and Hayward. I don't think that would have been the case with IT, unless their development is MUCH faster than predicted.
Another point that is VERY overlooked. Lots of people say that Kyrie and IT both play bad defense. The difference, in my eyes, is that Kyrie doesn't want to play defense and IT.. just *can't*. Perhaps in the right system, Kyrie (with the physical tools to defend opposing PGs), can be cultivated into a better defender.