While I'm not a huge fan of the trade for a few reasons, on paper it makes some sense. The Brewers gave up Wong, who is coming off a career high offensive season. In return, they received Jesse Winker, who is coming off a career low offensive season (largely due to injuries and possibly a bad home park). It's a classic buy low situation.
And on top of that, they also brought in Toro, a cheap utility option with some upside.