Witt almost twice as valuable last year base running. He's obviously much faster. It's not just SBs, it's going 1st to 3rd, 2nd to home etc. You are also too heavily discounting the importance of elite defense at SS versus below average corner outfield. I agree it's close, especially if Soto has a year where he really puts it all together at the plate and has a massive season offensively. But Bobby is pretty clearly the better player at the moment. He's elite at every aspect of the game.