Another piece of analysis.... We can all agree that some players are more ready for the NBA than others.. Some guys come in ready, some guys need time..
Take a look at Jimmy Butler, he had 3 years of Marquette, and wasn't really ready for the NBA in any sense. He then developed into an all star caliber player.
So let's go with the assumption that D'Angelo was not ready for the NBA, and could have used one more season in college. While he was smart to leave after a year because his stock was never going to get higher he was the 2nd or 3rd best prospect in every mock and ranking, I agree he could have used another year to put it all together.
In the same way Jimmy Butler was a bench warmer to a mediocre bench player to a mediocre starter in his first 3 years, then became this great starter and All Star in Year 4.
Someone like Kyrie was ready after a few games in Duke. So Kyrie started out at a higher plane than Russell, that happens. Stephon Marbury was light years ahead of Kobe in day 1 readiness for the NBA.
So let's compare this year's D'Angelo to the last 3 BIG TIME PGs. Year 1 Russell Westbrook (age 20), Year 1 Kyrie Irving (age 19), Year 1 Stephen Curry (age 21).
We're comparing a Year 2 guy with 3 year 1 guys.. It's conceding that those 3 may have been more ready for the NBA than Russell.. Completely ignoring the situations they came into, and who some had as teammates.
But it's not like we're comparing a 8th year guy who is 27-28 to 19-20-21 year olds. We're comparing a 20 year old to a 19, 20 & 21 year old.
Let's take a look....
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Looks like he's still far behind, but look at the minutes, Kyrie had 30.5mpg (That's 20% time more than DAR), Russell 32.5 (Almost 30% more than DAR), Steph had 36.5mpg (About 45% more than DAR)
That's not necessarily Russell's fault.. Everybody on the Lakers has been around 25 or so minutes, Clarkson has only shot up to 28 because of necessity with Russell & Nick out.
But even if his efficiency would drop in those 5-10 minutes, there would be more in terms of PPG, RPG & APG
So let's make that even at 36 minutes
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Just look at Kyrie versus Russell based on 36 minutes Kyrie +0.6 on PPG, Russell +0.1 on APG, Kyrie +0.1 on RPG
Russell +0.6 in SPG, Russell +0.7 in TOPG
And for someone who doesn't get to the line often, he's pretty close to Kyrie, the advanced stat of Free Throw Rate is in Kyrie's favor 26% to 23%, and far ahead of Steph's 17% Free Throw Rate
Now if you don't like the PER 36 comparison because you don't think the 10.5mpg would translate for Russell, nor would the 5.5mpg would translate for Kyrie because there would be some fall off.
Let's look at PER 100 Possessions, which takes into account all of the possessions that the player is involved in, and figures out what that produces every 100 possessions.
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He compares well to similarly aged elite PGs. He just happens to be 1 NBA season behind developmentally.