corked bats - is there really an advantage?

[Buckeye12]

If I remember correctly, I believe that I read somewhere that the BESR of an aluminum bat and a wood bat are nearly identical only differing in 1-2 MPH. However, the major difference between aluminum and wood is the location of the moment of inertia which is much closer to the handle on an aluminum bat and more towards the barrel of a wood bat. This location allows the user of an aluminum bat to generate more bat speed than he/she could using a wood bat.