PSpice is not entirely suited to integrated circuit device
simulation. It has always been for board level use, though
I know people who have used it successfully for IC design
(always for cost reasons). But they were also in older
technologies, where advanced modeling was not needed.
I am having an opposite problem trying to use industry
PSpice-compatible macromodels in a semiconductor
SPICE type simulator. There are dialect differences,
device model param default differences, units differences.
So beware your belief that "works" means also "is accurate".