I should clarify what I meant by "knowledge". There are aspects of the game that I do not see Ralph having the level of knowledge of another player. One such area would be multi-rail kicking, which I dont think anyone has the level of knowledge that Reyes has shown me over the years of seeing that guy play. There are things that Reyes does that boggle his peers, fellow professional pool players.
Of course part of the reason for this is that Reyes has a very different upbringing in pool and plays everything, including 1-pocket which is going to make you learn shots never even dreamed of in 9-ball.
Like for instance, watch this shot, to even dream up something like this...
http://www.youtube.com/watch?v=2_yuUgEpEyg&NR=1
He actually stunned the cue ball up and hooks the guy behind the pack, he almost made the flipping thing. You have a guy in Danny D who is a world class pool player in his own right with a gigaton of experience and knowledge and he cannot even call Reyes' next actions because the guy is just out there with his knowledge and ability to invent new ways to win.
Not taking anything away from most every other pro player in the world but there is a level of knowledge that Reyes has that warps most top players and it comes from the fact that Efren has played every game out there and learned all the shots for each of those games, invented quite afew of his own, and then if he has to can draw upon those in any game.
Souquet has a control that is second to none, and that takes alot of knowledge. But Reyes has a knowledge to take moments where he is completely out of control, in a bad spot, and then turn it around to suddenly have his opponent looking even worse. With regards to kicking knowledge on kick/safties I cannot think of another player in the world at the same level of Reyes. He pratically forced a paradigm shift on kicking when he came to America.