Yes, I trust an auto to let me deliver more lead on target to save my life than a revolver.
I carry a 1911 with nine total rounds, two reloads. My 1911 is the most reliable gun I have owned. (It's a Kimber Custom II.) If it DOES malfunction, I can clear a stoppage very quickly, I train by having a friend load a dummy round into my magazines. (I can't remember the last time it jammed any other way.) The key is to practice, and test your gun with the ammo AND magazines you will be carrying.
I'm not much of a revolver guy. My 1911 is always a single-action pull, with a very good trigger. If you carry a revolver defensively, you should fire it in double-action, meaning, not cocking the hammer before you fire, making it a long, heavy pull before each shot. It is less likely to jam, but if it DOES, it can be more difficult to clear. (Imagine a bullet protruding too far from the cylinder, preventing it from turning or folding out.) Most revolvers that most people carry are five or six rounds. I have never been able to reload a revolver quickly with a speedloader.
This doesn't mean that they aren't for anyone. If you can REALLY shoot, (meaning, better than me, which isn't saying much,) and you know what you are doing, a revolver can be very effective. (Google some videos of Jerry Mickulek.) But in my lifestyle, budget, and situation, I don't have the time or the inclination to become proficient with a revolver. Maybe one day when I have more time and money I'll work on it.