According to Baum their bat has 2% more "pop" than a wood bat...FWIW. Not sure I belive it...
This is all conjecture on my son's part (and talking with other kids in the dugouts this summer/fall) but he says the Demarini's tend to be more dead, he did not like the bamboo's, he liked his Mizuno maple, and like's his Baum. Costs more but they are pretty indestructible.