I'm really not sure why people keep using micro for benchmarks. Its CPU gets throttled to hell if it gets pretty much any load at all.
My point is not to knock the Raspberry, rather, this demonstrates just how pathetic an Amazon Micro instance is. It's abysmal to the point that you have to ask yourself why they provide them at all. It's like they're teasing us, "Here, a free server! Enjoy it!" but in reality you'd rather drink a shot of drano full of nails because it's so painful to work with. Then again, beggars can't be choosers and free is free.