I'm not sure anyone's said that. Maybe some overzealous people might creep in that direction, but I thought the author was pretty clear. Obviously, his batting average is lower with 2 strikes than his overall batting average, but it's much higher than the norm as compared to the rest of the majors. In fact, his average in two strike counts is higher than the major league overall average. That's something. Hence the difference between "strike two, you're out" with a normal player, contrasted with the "strike two, don't panic" with Joe Mauer. Mauer was also called one of the best two-strike hitters in history. Which he is. But the author never hinted that therefore Joe should attempt to get into two strike counts.