How does he (and Shesterkin) compare to Askarov?
Shesty and Sorokin are two very different goaltenders in terms of style. At a glance, Sorokin is far more aggressive, and the risk is that it can bring him out of position.
An older article, but it breaks things down nicely:
Sorokin vs Shestyorkin: A Style Comparison - InGoal Magazine
Great write-up on Askarov -
https://thehockeywriters.com/new-goaltenders-led-by-yaroslav-askarov/
As for Askarov, I can't really speak for him as I haven't seen him play, personally. Seems to be very composed and with a great knack for anticipating the play From what I've read, Askarov may compare more favorably to Shestyorkin than Sorokin, but I'm talking strictly in style. He seems to be more cerebral and is not aggressive like Sorokin, but he has that great, explosive athleticism that Sorokin does possess.
Just from watching clips, his skating and edgework are extremely good. For me, it's his anticipation that is phenomenal. Sorokin, at least when I watched him more closely back at the time, sometimes had edge issues.