Even in the minors, his best BABIP was .327, and that was in A ball. One more time in the minors he was over .300 (.304). He mostly sat in the .250-.290 range. He doesn't hit the ball particularly hard nor does he have a lot of speed, so it's unlikely he'll consistently be in that .320/.330 range. Very unlikely he'll end up being a .750 OPS guy. He has a much better chance of being a career backup than anything close to well above average catcher. Of course, with our catching situation, he may take a starter spot. And as good as Escobar has been, he posted a 1.5 WAR last year and a 2.4 WAR the year before. He's on the borderline of being a role-player/solid starter himself, below league average for a shortstop. Now if Murphy doesn't end up working out as well as that, yeah that's not good and not better than league average at his position.