In 2015, Sano's OPS+ was 149 (though with fewer PA) compared to Bryant's 136. In 2016, Bryant reduced his K rate to 21.6% from 30.6% in 2015. He is having an MVP season. Bryant and Sano had similar K rates in the minors. With time, Sano should be able to reduce his K rate though doubtfully as low as Bryant's is now. Just looking at it from that angle, it's not a stretch to me to think Sano could have some seasons like Bryant is having now. If Sano was a Cub I'd bet on it, because whatever they are doing over there is working.