Bro, its impossible to stay on point with you.....i answer one question and you come back with something completely different or ask three more questions without putting the original one to bed!
I'm not saying you cant ever get an even distribution with a fog style n2o kit.....just A LOT less likely! When you fog the air box your dependent of each cyl to take in an equal amount of n2o, too many things can affect this, thats why a spray bar will be more efficent, easier on engine parts, and make more HP(provided one is inducing the correct amout of fuel, where as anybody knows is how you make all your extra HP from anyways)!