I cannot speak about this first hand because i have never been to a US event BUT 2 teammates of mine went to the last nppl in vegas i believe, they stayed with Glenn and Davey aswell as all the other boys from infamous.but is that the same for all the other divisions??
They said that after the pro division the level of play drops incredibly. From what i can see the SPL isnt that far off the CPL, deffinately not on a player to player basis.
Maybe robbo or someone else who has been to US events can comment on the level of play in the other divisions.