Not only that, you'll see more perfectly timed misses. This is also true of the players ratings. It can be experienced by going to the batting 'timing' practice, playing default everything, and face a high pitch control rated player versus a low one. Out of 100
perfectly timed swings you're more likely to make more contact (less whiffs) against the low pitch control player. This is irrefutable. (It even alludes to it in the Pitch Control slider description.)
A slider is meant to control this and other effects. Think of sliders this way - they are able to universally manipulate player ratings without modifying them individually. If one were to go through and lower every players contact to 10, and lower the Pitch Control Slider to 0, you would make more contact than if the Pitch Control Slider were at default.
Also, PHX was banned last year, remember? He's the 'all world' who spoke in absolutes about every slider, independent of what others may or may not be seeing.
I'm going to ignore him, as we all already have experienced the exact opposite of his opinion.