Stepan playing against Crosby, Stamkos, Kopitar, Bergeron, McDavid, Tavares, Barkov etc is a big difference from Miller playing against 3rd liners. Yes, he has better linemates, but they also play against better players.
And Stepan is a much better player overall than Miller. If you take cap-hit into account, that levels it a bit, but in my opinion not enough when you see what Stepan contributes defensively. Miller on the PK is not something I want to see. The whole "powerkill" hype I never understood.
Miller is a good player, but with his insanely high s% this year, which was close to Draisaitl, Crosby, Malkin, and even higher than Kucherov, people have to realize it is highly unlikely he can keep that up
Hes done this 2 seasons in a row now.