Chrome-style cards (Prizm, Topps Chrome, Optic, etc.) have:
more visible scratches
sensitive surface coating
prone-to-lines printing
easier chipping edges
harsher reflections
Chrome Pros
sharper print
stronger colors
premium feel
Chrome Cons (grading-wise)
surface flaws are harshly punished
scratches amplify under light
print lines are common
Paper cards generally:
hide small scratches
chip less on edges
show wear more gradually
Understanding the difference helps pick better grading candidates.