I have an interesting theory about that, longball. If you want to picture Mel Gibson when I lay this out that's ok-LOL. First, let me ask you something. If the mishit was closer to the intended target than a ding is it possible your aim was off by the amount of the mishit?
As for the theory, there's been huge discussion about a virtual machine variable that is supposed to adjust stuff so you don't get too good. (This is a seriously understated and oversimplified way to say it.) Search "VEM" for the sordid details but my theory says if there is this virtual adjustment then missing the ding would make you look like you aren't accurate enough to adjust yet. LOL-How's that for left-handed logic? If you ding too much the adjustment will come and if you don't ding enough you get left alone.
Whether or not there is an adjustment at any time, I mishit as many shots as I ding, many times on purpose and I don't see drastic results. If you golf in real life you know you can make what you thought was a perfect shot only to see an unexpected result. The same thing happens here and if you believe this game emulates golf better than any sim I've seen then you can accept what is happening-it's real golf life.
If you expect to win by playing by the exact numbers I could see where you would be annoyed. I annoy the heck out of myself because I can't shoot the same scores every time out. Then again, I can't remember the last time I shot the same score on successive rounds IRL.