Without being any of the above three PJ, scoring so low has always been a conundrum to the majority, if only because it seems so unfeasable when placed next to ones own scores.
Imagine the scene however, were you to concentrate wholly upon Wgt, to spend time collating notes, to make a little thingy to go on your screen under the meter bar, to read all there is to read about club distances, putting speeds and green speeds, to have a calculator to hand and the ability to factor in wind, elevation,lie and course knowledge. Each shot then becomes an equation of factors which rely heavily on an ability to hit the meter bar in the right place, and can only produce almost identical results upon each attempt.
There is talk of VEM, the lurgie, lie telling winds and monster ball magnets, but truly, using all of the above and a little skill with the meter, you can overcome each of these perceived difficulties and produce shots and results like those you mention.
After all, this is a computer generated operation, and a computer can only react to the users input- it cannot make things up other than the commands it receives. The secret then, lies in knowing the parameters of all the factors, and this knowledge is not instantaneous and cannot overcome our inate beliefs that we can do no wrong.
I know what you're saying because I have thought the very same things, but it is all relative. When I began, I could not comprehend my making par, and yet in time, I did. The same for breaking par, and moving down into the 60's and occasionally beyond. At the present time, I cannot see me hitting regular low 50's, but maybe given time, patience and more knowledge ( none of which I have :-) ) I could be there one day. But I doubt it.
I hope this helps a little, but I know it won't satisfy since only self belief will prove that for you.
Lizzie xx