Efren is actually one of my all-time favorite players. He could do things on the table that very few, if anyone else could do at the time. I just didn't see him completely dominate every other player in all aspects of the game as a whole.
Case in point, virtually everyone knows that Efren has a weak break. A Michael Jordan of pool would have a SVB break, with Efren cue ball control and creativity, Shaw or Filler shot-making, Corey's creativity and a mind to figure out the break, etc.
So wouldn't the Michael Jordon of basketball have the physical size of Lebron, or the dribbling skills of Iverson?
NO he wouldn't and didn't, yet he is still the greatest.
You want perfection, wish for GOD to play pool, because the Michael Jordons of the world have never been the best at every aspect of their sport.
What you expect is a pipe dream, unless we start genetically engineering designer people for specific purposes.