I have been to many PGA events and also attended the Ryder Cup this last fall.....which if you have never done....put it on your bucket list if you are a big golf fan.
I am amazed at how many great shots they hit and how long some of the players are off the tee. One event we were at I commented to my son we had not seen any really bad shots and we had been there for 8 hours. Two seconds later Sergio hit one over my head into the woods.
Assume a guy is a good stick and normally shoots 78. Those 6 shots above par might come from just 3 or 4 bad shots in the round. An OB or yanking an iron or two. Getting to take those out of play brings that person down to scratch. Making a few other shots better brings it down further.....holing a few more putts even further. It will be interesting to hear what the poster who said he was going to play a round and see how much his score improved. With 3 mulligan for a good stick....it is just a matter of how low the score would be. The question would be if the iron shot is now at 15 feet versus 25 feet.....with three putts would he make enough of them to improve his score significantly (two putting from 25 feet or 2 putting from 15 feet didnt really help the golfer).
What I think you are missing is that every shot they hit are not great. Just look at the British Open on Sunday....no way in hell were 95% of Jordan iron shots where he wanted to be....on 18 holes that would be 17 iron shots out of 18 shots. Also just like the average guy the pro can miss a 3 foot putt.
On an easy dog track....the average Joe's ability to keep pace or pass the pro becomes more difficult. You have used the argument about how much tougher the PGA course is and how much worse a players score would be. Of course any harder course your score goes up....but with mulligans it should go down if you have any kind of stick. You are also not taking into account the yardage difference. You seem to discount this like it is no big deal. It is a big deal for the pros and a big deal for average Joe. In fact it is the number one reason the players with distance have dominated in golf. It has been this way for quite some time and it will be in the future. (Jordan on of the few to not fall in this category). Sounds to me like the rationale that size doesnt matter.
The best comparison of what a golfer would be to score would be is a best ball scramble that every golfer has played in. So the question is if at Hazeltine using best ball team from the white tees and they can shoot 10 under (which a group of single digits can and do all the time) can Jordan do that from the tips on the same day? Could but I say doubtful on almost all days. Put a bunch of 20 handicap golfers together....Jordan kicks their ass because they dont have the ability to hit enough good/great shots. Tell me your argument why Jordan would win. My example I am using a championship course.
are you a good player?