Here is the context of the point shares you are talking about:
His team was trash. Look at the other top players who produced in the KHL in their D+1 season:
19-Year Old KHL Players - Regular Season Stats
Sort by PPG. Look at the teams those guys were on. It's not a coincidence that his numbers were down in comparison. His team couldn't score. He was very close to being their best offensive player. His best teammates in scoring were Ryan Stoa and Christian Thomas. These are AHL players, playing in a better league.
His team isn't trash. They were a playoff team. They didn't have their best season, but were middle of the league. Of all these players mentioned, he played the most playoff games in his D+1 season. Tarasenko was the only other player whose team even made the playoffs, so I don't think "his team being bad" is a good excuse.
Why can't we just say he had a respectable season in line with many of the better players his age that have come before him in this league? Instead, some fans try to spin his stats and claim he was actually better than the majority of these players when he really wasn't. Its misleading and counterproductive. The kid still has to improve. A player who averages less than .5PPG in the KHL is not yet an NHL'er. There were people who claimed he was going to walk into the Rangers and instantly be the team's best RW. The team has a RW who played in the same league at Kravtsov's age, and averaged a higher PPG. Thats not to even account that this was five years ago.
If people take this attitude that he was the best on his team, the teammates were the problem, his point shares place him better than elite NHL'ers, he's going to replicate what Pettersson did because Craig Button ranks him as the best prospect not in the NHL, he's not going to be allowed to properly develop. I hope the GM has a more measured approach.
Regarding this, goalie stats in the KHL are inflated. Look no further than Magnus Hellberg going to the same team as Shesty and putting up a .940 compared to his .950+. Then you have Koskinen leave the KHL and come here and put up average numbers (yes, he did go from a very good KHL team to a lottery NHL team). Yes, these players are older, but the league they are in is friendly to goalie stats. I'm not going to kill the guy because he clearly is a fantastic goalie, but to say his stats match his ability would be a bit much. I'd much rather see something like GSAA, but I'm not sure the KHL has this.
That doesn't mean that Shestyorkin wasn't the best player in the KHL this season. He had the second highest SV% ever in a KHL season. The second best goalie in the league had a SV% .008 worse. Hellberg's and Koskinen's stats are not bad, but there is a big difference between Shestyorkin's stats and their stats. Shestyorkin SV% was .013% better than Hellberg this season. Thats a big difference. Over two seasons, his SV% was .007 higher than Koskinen. His stats are way better than Sorokin's every year. Hellberg and Koskinen having high SV%'s doesn't invalidate Shestyorkin's SV%. And now we also see that Koskinen isn't a bad NHL goalie, so these aren't a bunch of beer league players that are having high SV%'s. Hellberg might also come back to the NHL eventually.
The lack of respect that Rangers fans give this guy compared to other prospects is hard to believe. They think that a league average or slightly better goalie is ahead of him. If thats the case, Shestyorkin is the most overrated NHL prospect in decades. His stats place him as the best KHL goalie ever. He's pretty unanimously been viewed for years as a top 3-4 goalie prospect, if not higher on some lists. He already plays and plays well for one of the best National Teams in hockey. What more does he have to do? There is not a more accomplished Rangers prospect, and a more underrated Rangers prospect. Its bizarre.