oldiebutgoodie
Apostle, Church of Vaporization
EQ's heater is in the center of a ceramic that is in a glass tube. VXC's heater is all around the glasstube of same radius and probably longer. So bigger.
You are correct about the length but not about the mass; I'll not say more about that. IMO what's most important, going back to the original question, is that the Cloud's whole heat delivery sub-system is just technically much more advanced. There are interesting, and I suspect unique, thermodynamics going on outside/inside the tube between the two orifices. Integral to this is the controller firmware. Add in the ELB air flow characteristics, and I don't know of another desktop vaporizer that is this sophisticated.