The higher output is a function of the higher energy density. That might have cleared everything up for me, except that I do not know what you mean by "higher

The higher output is a function of the higher energy density. That might have cleared everything up for me, except that I do not know what you mean by "higher output". Are you referring to power output? You are saying that, generally, in a given case of equal-sized reactors, a fusion reactor would be able to produce higher power than a fission reactor?