I tried it out. The quoted_tweet event is only fired for quoted tweets and not retweets, and that brings me back to the original question; are retweet events (when tweets of the logged in user are retweeted) published by the user stream and if yes, what is the event name?
I do remember there being a retweet event type sometime back in 2012 (70% sure), but can’t seem to find it now. I’m probably missing something obvious.