(the player camera also being a little high, though I'm not sure the engine is at fault for this though)
The first 2 things that come to mind that could be causing this problem would be...
-For some reason only character models are smaller (or maybe the camera being a higher gives the resemblance of it being smaller)
-The model origins are set too low (making the model move upwards)
Screenshots comparing pc and psp below
pc version:

psp version:

(same progs.dat & progs files)
obvious difference there, what do you guys think might be causing this?
I have reasons to believe the the player height is thrown off... or the models are all just shrunken down... observe the difference from pc to psp.
pc version:

(be jealous of fullbrights)
psp version:

note how the machine looks considerably smaller in the psp version, could it be that the player is taller?, or that the model is smaller?
(weird difference in lighting as well... probably just darkplaces settings.)
well anyways, thanks for taking the time to read.
Any thoughts/ideas on what could be causing this?