Here's two Rasbperry Pi Benchmarks (these are also pre 512mb model), bear in mind these are both just run from home networks:

http://serverbear.com/benchmark/2012/09/11/ENc5kl1X2ZciF0LZ

http://serverbear.com/benchmark/2012/09/08/gcMHO1PDOY6Crq2W

Compare with the Micro performance:

http://serverbear.com/166-micro-amazon-web-services