wilderness - 6:40 pm on Dec 9, 2012 (gmt 0)
Seems AmazonAWS is the only spider not able to understand gzip.
Is it possible that you've misunderstood this thread and/or Amazom AWS?
Amazon AWS is NOT a solitary spider representing Amazon, rather a bunch of rogue unidentified crawlers that Amazon sell server space to.
The server space software is dependent upon its own software capabilities.
Using the lack of Gzip capability is one method of stopping these economical crawlers.