I don't see where the amplification is. The size of the GET request reflected to the target appears smaller than the POST request sent to the Wordpress XMLRPC.

I don't see where the amplification is. The size of the GET request reflected to the target appears smaller than the POST request sent to the Wordpress XMLRPC. So it's less effective than simply attacking the target directly. Am I missing something? [Edit: reworded for clarity]