I thought I'd try to explain this another way. Something Teknetinium said in an earlier post made me thing of this:
Lets just say for the moment that I agree with you, because I do. Here's my example: which would you rather have; the ability to get your nose on the bandit and kill him in 5 seconds but have a 10 second "cool-down" period where you can't evade and you can't switch targets OR would you rather have the ability to get your nose on him and kill him in 15 seconds with *no* "cool-down" period? Once you get your kill you can switch targets or evade immediately.
There is no right or wrong answer to this. Its like me saying "you're building a house, which tool do you want, a hammer or a saw?". Well, you ideally want -both- because each situation may require a different tool. The difference between building a house and fighting in a fighter jet is that one is life or death, the other...no so much (I guess your shoddy carpentry could cause the house to collapse and kill you! :D).
But what if you could only have one? If we talk in terms of having only one choice, you can't have both tools, then the answer becomes more concrete. In my relatively few years of life, everything has told me that efficiency, sustainability, and multitasking are, by far, the best things to shoot for. I want to kill as many birds with one stone as I can and then already have 10 more stones in my pocket ready to go to start killing more. If I have a grill ready to get a meal for my family from those birds I'm killing, all the better! If I can kill 5 birds with one stone but have to pause and and risk having those birds peck my eyeballs out, I'd rather kill just 2 if it means that I don't have to stop and risk harm. If I have to resort to killing only one bird with one stone, I'll get a friend to help or I'll bug out and come back with grenades tomorrow. ;)
It terms of BFM/ACM, I think its clear what "efficiency, sustainability, and multitasking" translates to. I would take that any day over the alternative but all the while be figuring out how I can have both. ;)