While this is true, it's still a big mistake by Davis. Marte has a great arm but his momentum wasn't carrying him directly toward home, it was more toward 1B. He'd have to turn his body slightly and get off an absolute perfect throw to get Davis. While no guarantee that he would have scored, I would have liked his chances and that's a play that you'd tag up on 99% of the time. Davis goofed; it is what it is.