Yes the right retweet can bring lots of traffic, but not always. I was so happy when actor Ed Begley, Jr. with verified account and 28.2K followers gave my TV site a retweet.
Guess how many of the 28.2k clicked that link? Are you ready 12 people. I tracked it using bitly for tracking.
Yet I have had people with only 800 followers give a retweet and 68 people show up.