How do you truly know an opposing hitters tendency? Based off what the coach sees or based on what they have on paper? What would be more dependable info? How about if the hitter is a pull hitter..? Slapper? Threat to steal? ETC ETC. Unless you are playing the same team day in day out you are guessing. Where a hitter hits the ball, what pitch they hit well vs what they don't are statistics! The thread shouldn't be this long, statistics are useful, they can help a coach make decisions without bias and favoritism. Of course the coach needs to buy in as well.Knowing an opposing hitter's tendencies isn't really considered a statistic. If the OP had asked the question "Is it important to know if another team's 4 hole hitter can hit a changeup" I doubt the thread would have gone this long..
Hitters tendencies AKA trends are based off statistical data.