So let's see if I got this one:
My understanding of what MFS said is that since a heavier aircraft has to produce more lift for obvious reasons, once you are OEI by banking into the live engine the horizontal component of lift (being greater than the one on a lighter aircraft) actually helps counteracting the yaw caused by the loss of thrust in one engine thus resulting in less rudder input required and causing the Vmca to decrease. Is that basically right?
Thanks in advance