I was telling my 9 year old DD just last night that the most perfect, most beautiful swing doesn't do any good if you miss the ball. And a really, really bad swing can hit a home run if the bat hits the ball right.I have seen some players that have virtually no adjustabllity, but can absolutely crush the ball if they get a hold of it. One girl in particular. DD's high school team faced her when DD was a freshman. The starting pitcher hung a pitch up in the zone that probably still has not hit the ground yet. Probably went 260 or 270 in the air. Late in the game, DD was brought in to pitch. Mix of speeds and movements, and this hitter was essentially helpless. Basically, if the pitcher made a mistake and hit her bat with the ball, it would go a mile. Otherwise, she didn't have a chance.
The conversation came up when we watched videos of her swing before professional lessons and laughed at how bad it was. Then she asked "How did I hit a home run with that swing?"