Horsepower limit for out of the box Edelbrock RPM heads

I am shocked and I mean SHOCKED with the small block TrickFlow head. This isn't soom rum dumb company here but they really dropped the ball on this head "bigtime." Someone is talking to the wrong person on such a simple head that is really just a cleaned up copy of crap that has been out for years. Woop te do another 300 cfm small block head. when they came out with the big block head it was quick then quickly followed by the 270 cc head. This small block head was supposed to be released what, 1 1/2 years ago??? I'm sure glad I don't want a set.