Those are join lines and will be present on all two piece inserts. The join lines won't vary significantly from one sample to the next, what can vary is how visible they are both in pics and IRL due to lighting and angle of view.
Join lines can be obscured better than what rep factories do with a paint mod, but I've never seen a stock rep two piece insert that I couldn't find the join line on if I look closely enough in the right light.
ROF insert before and after a quick touch up paint mod. It was claimed that VRF and ROF used a CF Pepsi insert also. So it's probable the CF insert join lines will look similar to the ROF (pre-paint mod) in certain light at certain angles.