Strikeouts (from a hitters view, pitchers entirely different) aren't really that much worse than other outs, especially if he is getting on base at a decent clip (you are probably better off just using straight percentage of PAs). And if he's not really compromising his extra base hits, then the ways you get to 1st base are fairly unimportant. Indeed, Rickey Henderson - and no, I'm not saying Bradley is going to be one of the top dozen or so players ever - was not a contact maven by any stretch.