The MOI difference is important, but the biggest factor seems to be where along the length of the hat specific hitters contact the ball most frequently. The hitters going with the new bowling pin style had a tendency to contact closer to their hands, outside of the optimal "sweet spot" of traditional turn models. This new style shifts the sweet spot lower on the bat which should help those players.Any response to the new bats? They seem like a brilliant idea to me since they are well within the configuration specified by MLB. Moving the mass closer to the batters hands seems to be a way to increase bat speed whereas having the main mass at the end of the bat would appear to result in more of a pendulum effect that would be slower to accelerate. Add to that the tendency that most batters have to grip the bat right down at the knob and you have the recipe for a longer slower swing. Whatever the reason, batting averages have fallen considerably in the past 25 years from around .268 in the early part of this century to .243 last year. That is a huge decline, I think there were only 8 guys in all of baseball that hit .300 or more last year. So I'm all for anything that will improve batting averages and make the game more interesting.
Bat speed may be somewhat analogous to swing weight in a fly rod, move the center of inertia closer to the batters hands and the bat speeds up, remove mass at the tip of a fly rod and swing weight decreases. I don't know if it is a macho thing or what but choking up on a bat gives better control and more bat speed yet few do it. A guy named Barry Bonds did it (along with some illegal drugs).
With the torpedo bats, hitters can swing faster, but the bat has lower momentum and less leverage so the max exit velocities tend to be about the same regardless of bat style. It could possibly shift the BA-SLUG pendulum back, we'll see.
It's well within the rules and I fully support it. Pitchers have become SO good, velocities are higher than ever, pitches move more than ever, and pitchers have a wider arsenal than ever. That's the driving factor for the lower batting averages. The new bat style is a tool that could help hitters much the way super high speed cameras and ball tracking systems have helped pitchers. I enjoy the evolutionary arms race between pitchers and hitters.
