As Ronnie OSullivan describes snooker vs pool: "snooker is like a nice fillet steak and pool is like an old bit of mashy ham". A bit disrespectful, but snooker is a league above pool in terms of difficulty. Many snooker players have easily transitioned into playing professional pool, both American pool and English pool. Very few, if any, pool players have made it at snooker. Effren Reyes is apparently very good at snooker. That doesn't seem surprising though