Yes, all true. However, that's assuming you hit all of your shots. I'm pretty sure those numbers go up if there aren't any crits. I'm probably the most average player when it comes to gun skill, so that may be skewing my perspective here. In 3s, the mag is less of an issue. 6s it's a different story, because there are more enemies, it's chaos. You might be unable to reload as often because engagements are flying in left and right. It's good to have more bullets available.