I think that the talent level in straight pool is smaller mainly because the game is not near as popular as 8,9,10 ball and one pocket. I have never been around anyone who i would consider even a semi pro level 14.1 player. It's a beautiful game to watch especially for me because my offensive gear never caught up to the rest of my game even when i played pool everyday.
Perfect pool to me is never loosing control of the table. Whether that be running out everytime or playing jam up safes when you can't get out so you can return to the table without giving up control. Some may have a different opinion. That's the thing about pool, you don't have to be the best player. you can beat a much better or more accomplished player if you keep him in his seat, or when he gets to the table make sure he can in no way gain control.
Perfect golf according to many of the pros that have been interviewed is birdie or better on every single hole. I would have to agree with them. Hitting every green in regulation and 1 putting would be perfect enough as far as I am concerned. Many pros believe that someday this will happen, a great player will get hot and break par on every hole in one round. I am not sure i agree because the pressure would be so great that i don't think any human could handle it. JMO
Some people believe what you mentioned about making eagle on par 3's and 4's and double eagle's on par 5's is perfect. Meaning that you would never need your putter because anytime you could reach the hole you would have to knock it in. To me, that is so unrealistic that I kind of dismiss it as being possible. Although it would be fun to watch.
Your question about precise calculations on shots other than putting.
The targets you are shooting at are much smaller than you think, especially on tour. fairways are 15 yards wide and sometimes smaller, and when you fly the ball 300 yards in the air it is very difficult to determine where it may land. the green is not your target on approach shots in pro level golf, the flag or a specific area around the flag is your target. It all depends on the way your target area is contoured.
If you could play on the same type of grass everywhere in the world and every shot could be hit form the same length of grass and every shot be on level ground than that would eliminate alot of the factors that go in to calculating each shot. Then you would only be dealing with the elements, trajectory, distance and spin control, working the ball one way or the other, and being able to focus on making a perfect swing.
Course management used to be the most important tool any golfer could learn in order to shoot low scores. Some argue that because of technology, players getting stronger/more fit etc, that course management is a thing of the past. I disagree with them wholeheartedly!!! Last years Master's is a great example of how important it is to make the correct decisions all the time. Zach Johnson won by making correct decisions and putting himself in the best possible place he could on each hole to make the lowest score possible. He never hit a 325 yard drive or even tried to reach the par 5's in 2 shots.
Another fun thing to point out about golf is the patience and discipline it takes to memorize the rule book...
If you have never read it or even tried to interpret some of the wording on specific rules you will be amazed at how crazy it really is.
You touched on rating pool players and how different people view each type of player. I agree that ones perception of what a great player is could only be based on what they have experienced or seen themselves. I hate handicap systems because there is no clear cut way to determine what a "B" player is. I really would rather not go into that because it could cause 50 more pages to be added to this thread.
POKER.......
Well, let's just say that i have been blessed with the ability to understand how and why making correct decisions effects the amount of money I end up with in the long run. Poker is the most frustrating game on earth IMO. Some days the correct decision works and some days it doesn't. The game has been good to me overall but sometimes it makes me want to break everything in site.
Gotta love it