Ok so Just my thoughts ...Here goes
So I play with some great players from time to time and I play much more often with players that are "Capable" of great scores... some guys in my club are very very good Even myself (I say with all modesty) We are ALL capable of those great rounds and low numbers.
What's the difference between a very good player who does lay down the 18-20 under par round from time to time and the Best on WGT?
For "The Best"... These guys take the "Feel" outta the game
They have all mastered the mathematics and the algorithms...They have developed formulas for shots and putting that are almost like having the "Pac-Man cheat codes in the 80's!! (Not to say any of um are cheating)
Now once you have these said formulas sitting next to your computer (Or on a separate computer screen) while your playing ( Oh yeah some actually run their formulas on another screen as they play) it comes down to only 2 variables left for these guys.
#1 Hit the ding! And #2 allow for the occasional WGT "That don't add up? BS"
These guys use calculators, spreadsheets, Wind gauges, protractors, trigonometry, Advanced Calculus and Linear Algebra to formulate a shot or putt...They may even use Microscopes to read the dots on screen and I'm pretty sure I even seen Young46 using an Abacus in a live stream (kidding Jason)
So basically 98% of the "guess work" has been eliminated from the game. And ALL the "Feel" is gone...
Now I personally can't and wouldn't want to play that way I am to "Right-brained". Nor do I have the patience lol (To each his/her own) I have never even used a calculator and have zero notes on any course or hole in the game. Now that's not to say I don't use a "formula" or have notes... But mine are just crammed in to my undersized brain. I go off of memory on shots, holes and putts and I use a ton of "Feel" another words I may hit a certain putt a little harder and it breaks less.... I hit it softer it breaks more...I hit a shot "off" ding on design and therefore I play less wind on that shot that it shows ...Things like that, These guys generally DON'T do that ...They pretty much play 100% Ding shots because their formulas are based on a "Dinged" shot or putt.
IMHO Josh (Smithers) amazes and is somewhat of an anomaly in the group of "The Best on WGT" I know he does have basic formulas... BUT is very much a feel player at the same time. And he plays so fast I'm pretty sure he is not crunching numbers on multiple devices and using his handy anemometer for wind every shot! There might be a few other top guns who play this way as well but unlikely.
So inconclusion what I'm saying is if your willing to do enough research in obtaining an almost foolproof formula (Young offers up his on twitch) Or develop your own put in the work of "Truly" mapping every course, every hole, every club AND shot type in your bag combined with a ton of practicing on hitting the ding near 95% of the time....You can become as good as anyone on the Game!
Oh last thought I have watched Young46 demonstrate his "Putting formula" a few times and have no clue what the hell I'm looking at? Kinda feet Like Marty McFly watching Doc Brown explain Time Travel!!