I don't usually write reviews but with some of the responses I have read I thought I should.
I get what you have said about Super Metroid. The problem is that most people are not use to having a separate button to duck. In fact having to use a different button the down to duck causes many problems as you do have to retrain yourself in order to pull it of on muscle memory (Which really matters in this game). I would also contest that in Super Metroid you still DUCKED WITH THE DOWN BUTTON and you were unable to duck when moving. Most people would use the shoulder buttons to aim up and down. It is also worth mentioning that Super Metroid had a hard control scheme for its time even among the hardcore crowd (mostly because you could not dash jump and fire with out shifting your thumb).
Bottom the controls are NOT!! intuitive and there are better options. In the case of the two control sticks that you mention there is currently not a better way to play fps's as you will have a quicker response time and it also required triggers and bumpers to work. I can't argue with that but I can make a argument with that there are better control schemes for this game.
With that said I got use to the control scheme within three runs (mostly I have been playing for 30 years and can pick up control schemes easily) when I started winning Oscars. I like the concept over all and it is very challenging. However it didn't hold my attention very long.