Here are a couple other tips on how to spot hairlines vs die polish on a PL or DMPL. When I look at your photos, it appears that both hairlines and die polish may be on the coin. On a PL coin a simple wipe can put hairlines on the coin. To check the PL coin for hairlines tilt the coin back and forth under light and the hairlines will often change directions when tilting the coin.
Die polish lines on a Morgan PL coin are created at the mint by polishing the die fields. The raised details on the coin do not get touched with the die polishing. There are lines on your coin around the tip of the arrows. A die polish line should stop on one side of the arrow tip and continue on the same straight path on the other side of the arrow tip.
I own a PCGS PL with a CAC sticker that has hairlines form a soft wipe and lots of die polish lines.