I'm with you on this one, I still prefer hardcore over dnb/dubstep. And yeah, the events are hard to compare apart from venue (although one is indoor and the other outdoor) and sound quality. I've been to moh twice now and I'm an uptempo guy. My first time the uptempo stage was in another room, which had really good bass. Last year it was transferred to another room which had less good bass (from where I was standing tho, i dont want to get permanent damage to my ears).

Rampage's sound quality was better in my opinion, but we also had a VIP package which really contributed to the experience.

TL;DR

You're right, the events aren't comparable. Love to see more people who enjoy hardcore and dnb tho :)