It's my contention the shots in this game are scripted and the people who regularly shoot tremendous, low scores simply have their shots memorized, regardless of the club. I know there are 3 9's in this game I don't even have to look at the yardage. I can play them fast and shoot low almost every time. Please stop trying to bring some sensibility to all of it...lol
And for all of you who say, "You still have to swing the club", I say you're right. But don't think your ability to hit the ding matters as much as you'd like to think. In fact, when i hit the ding, I feel my shots are MORE erratic than when I play my usual push/pull method depending on wind direction. I actually try to hit the front side or back side of the ding 90% of the time. If you hit the ding, it impacts distance and spin on most clubs, and since I miss the ding a LOT more than I hit it, I simply use my ability to miss it.
Also, I've adapted my game such that I use less and less spin on all shots. They tend to drift less as a result and as long as I'm pretty close to the ding (see above), all my shots still bite relatively well, with a strong tailwind the only real exception.
I use half back on almost all my drives and 1/4-1/2 on most all my irons and none on my wedges. I decided to simplify this game a bit by reducing some of the variables and it's helped me tremendously. It still is no substitute for shot memorization (or rather, memorizing ball flight characteristics on certain shots).