The ball is different though. The laces are tighter, or not as high up, and the pill inside the ball is different. Allegedly this was not done on purpose.
The part that is strange to me is MLB has not stated they were going to go back to the ball used before and they own Rawlings. IIRC it's adding ~5 feet on average compared to the previous ball. If anything I think the lower laces are affecting the pitchers more than the ball just being some type of tennis ball. Swing path change over the last few years is also playing into it.