Isnt Comcast more of an Neighborhood type of thing? Where if your whole Neighborhood started to DL, then you wouldnt go fast, but if no one was DL, then you would go the full speed of what you paid for. I always find it annoying DL things from my friends house with cable, my speed goes up and down and randomly. When it goes fast, I'm like YAY! but when it goes slow, I'm like WTF?