You know honestly I wonder if you guys even know anything about the game you snobbishly use to beat up the pool players with?
http://www.terrygriffithssnooker.com/snooker-lab.aspx
I assume you have heard of this person right?
You are so missing the point. It's hard to have to state the obvious.
A straight stroke delivers the cue on a straight line to the target and beyond. Thus ANY player who can do this has a stroke as good as Ronnie O Sullivan's.
Now, whether they can maintain that stroke under pressure is the question. And it also begs the question of if they can then why do they miss sometimes?
Perhaps because despite having a laser straight stroke they -gasp- sometimes aim wrong.