I'm too lazy to quote people, but Hayward isn't just a bit better than IT, he's easily a tier or two (more likely the latter) above IT. Hayward is one of the rare wing players who can score efficiently, create well, and defend at an above average rate. Trading him would be a mistake. Letting him leave would be a mistake.
Hayward averages 19.7 ppg in 36.2-minutes per game shooting .433 from the field, .349 from three, and gets to the line 6 times per game. (Shoots .824 from the line)
Efg % of .493.
Isiah Thomas averages 22.2 ppg in 32.2 minutes. He shoots .428 from the field, .359 from three, and gets to the line 6.6 times per game. (Shoots .871 from the line)
Efg% .488
So they both shoot about 43% from the field, and 35% from three, and isiah gets to the line a tiny bit more and shoots it about 4% better.
They both have efg% of about 49. Neither are really efficient.
Thomas averaged 6.2 assists and hayward averaged 3.7
Go per 36 and Thomas is at 24.8 ppg (vs Hayward 19.7) and 6.9 assists per game (vs Hayward 3.7) (hayward already averages over 36 minutes so no point in re-doing his numbers per 36)
Hayward is certainly the better defender.
Hayward is also much more durable.
And I agree that Hayward is the better player.
I think crowder is way better than burke.
I think the #3 pick is a substantially better position to be in than #12.
The difference between burke and crowder and #12 and #3 is a lot greater than the difference between Thomas and hayward.
I'm sure there are many people some the country that think that Thomas is better than hayward (I disagree). Thomas led his team (not a real great team btw. I think Chicago and Washington to name a few have much more talented rosters) to the playoffs and he was an all star too.
I think it's a lot closer between those two than you.