Just not as commercialized. Views are much better. You dont have to sit on bleachers.Never been to either....how so?
Only thing about the Gorge is it is in the middle of nowhere. Hard to get to and camping is the only lodging within 30-40 minutes.
Red Rocks was great, but I felt it didnt live up to the hype. The Gorge did.
ETA: i guess they arent bleachers...whatever you want to call the rock hard steps.

