Probably basic question, but I can't quite grasp this: I watched a section of POTC 2: DMC on both blu-ray and Sky HD. Both scources were running through a Panny 37PX60 at 1080i. The PS3 seemed much more vivid and sharper than Sky. Sound was more dramatic as well. Why is this? I thought SKY should be as sharp as Blu-ray, or does it lose a slight bit of detail through transmission. They are both HD sources, so why is one better than the other?