I don't remember the Couture/Toney one, I'll have to re watch, but shouldn't a regular double be on a straight line with the opponent thrown backwards onto his butt? I remember Chael shooting the double and then spinning Anderson around, basically running around him while getting a hold of him, making him losing his balance from the spin. I thought that was a little more complex than a straight double and I found very nice to watch.
Actually a correct double drives sideways after contact so that the guy cannot sprawl. Sonnen hits a lot of power doubles which are just driving through a guy but if your sprawl super well it can be stopped.
Also the couture Toney fight was a low ankle pick in no way did randy shoot in and get a outside single. He was basically laying on the floor when he took James down.
Sent from my Samsung Galaxy S3