There isn't even a comparison to be made between Stepan and Kreider, TBH.
Stepan plays the tougher position, and is better both offensively and defensively. He's such an easier guy to root for than Kreider is. Stepan is less athletically gifted in just about every way, but the man plays a smart, consistent game, and gives max effort on a game to game, as well as shift to shift basis.
Kreider plays a dumb game and disappears for large stretches. He hardly even uses his speed anymore. He's always had hands of stone, but he has all the tools to be a much more noticeable player than he currently is.
Stepan is making the most of his God given talent. Kreider isn't. I hope in time that he finds equilibrium.
Stepan is a much, much more valuable player at this point in time.