[MPetitt]

Well when we say "more difficult to stream", we really mean more difficult to stream WELL. With a larger file you are inherently prone to longer start times, more buffering, and therefore a worse user experience. That's when you start having to add CDN's, better caching, and better encoding. The vast majority of people out there barely have the bandwidth to stream HD under perfect conditions. We always have to make sure we aren't the bottleneck.