I don't know how Krstic is overrated. Who is overrating him? He scored 17 points last night. Just because he scored 17 and we can point out how well he shot and how effective he was doesn't mean that he is overrated. It's just pointing out that he played well. No one is saying that he is an all-star center. Some people are saying that they think he could be an adequate starting center in the league but is that really overrating him so much where there is no debate? He was a starting center for the Thunder who have been a pretty good team the past couple years. Thats a fact, no matter how you want to slice it.
For instance, those people who say he is clearly better than Perk are overrating him, I think. If he was clearly better than Perk, I'm doubtful that a competent GM would trade us Jeff Green and a #1 as filler.
Those people who tend to overrate him look at his shooting stats (7-for-8, 17 points) and 1) think that this performance is indicative of his normal productivity, and 2) largely ignore the defensive end, including defensive rebounding.
If I told you "I'll give you a starting center who scores around 8 to 10 points per game, shoots below 50%, is an average-to-below-average defender, and rebounds worse than Paul Pierce", most people wouldn't get all that excited. However, if that same player has a good night offensively, all of a sudden he is better than Perkins (a center who scores 8 to 10 points per game, shoots well above 50%, is an above-average to well-above-average defender, and has rebounded better than KG each of the last three seasons).
Also, for those who think that Perk had no offensive game, check out some of his performances last year:
Link (click on the points column to filter). Perk had some stinkers, but he scored 10+ in more than half of our games, as a fifth option. I'm a bit surprised that people have forgotten Perk's contributions this easily.