Are 8oz gloves worse than 6oz??

I've had this conversation with a number of people and was wondering what all you lot think.

My theory is that the extra weight from the 8oz gloves cause a heavier more concusive punch, (A bit like being hit with a pillow) but one that doesn't hurt as much as the old 6oz gloves.

Net result - you end up taking more damaging punishment over the course of a fight with the 8oz gloves because of the "protection" they give you.

The weight from the gloves pushes the brain around the skull more than a 6oz, where the impact zone is much smaller and sharper.

What do you think guys?