That's the problem, you are claiming "at this level."
It's been 25 games for Lundkvist and 10 for Schneider. That sample size is meaningless.
From an "everything before these 25 and 10 games," perspective, Nils is every bit as smart, as technically sound defensively, etc. Of course Schneider has the size and grit, he's just bigger. But Nils is not some pushover offensive defenseman which I think people assume he is.
He's an excellent defender, in the mold (not on the same level, mind you, just in the MOLD) of Adam Fox, in that they are both smaller but make up for the lack of size with excellent positioning and intelligence.
Please allow me to refrain that I'm not saying that Nils is Adam Fox. But by the same token Schneider is probably not Ryan McDonagh either.
It is of course way too early to draw any final conclusions and Schneider has looked better in his ten game sampling than Lundkvist did in his 25 game sampling.
It also means very, very little, as a comparison between them. Of course it bodes well that it looks like Schneider can handle these minutes, but it doesn't bode poorly for Lundkvist based on how he played. In fact, again, Lundkvist's metrics were actually pretty good. People are remembering his handful of misplays, but he wasn't nearly as bad as people were saying.