I mean sure, use one stat to make an argument. Javy Baez has had a huge impact on offense even if he doesn't have a bunch of walks. A 129 OPS+ is pretty darn solid. It is a close race all things considered. I like Yelich more because he truly has an elite impact on offense and is still a good defender (though vastly overrated). Yelich can also use his speed on the bases, unlike Baez who pads the SB stat getting caught almost a third of the time. Well it's a big difference maker. One guy has a .390 OBP and the other a .327