Leather is going to crease differently based on so many things:
- the type of interfacing that was used
- where the piece was cut from the hide
- how the leather is held/handled when it was manufactured and used
- any finishing
Creasing is not a good judge of quality. My cobbler has seen so many men's shoes made with the highest quality hides like Edward Green, John Lobb. Some crease so horribly and some look like it was barely worn until you look at the sole, but they are still high quality because factors like the above and the shape of your feet affect creasing.
Also thicker leathers are difficult to make puffy when they're being quilted so there is a reason why Gucci Marmonts, Prada Systems, and Dior Caros use thinner leathers.
Don't get me wrong because I'm not defending Chanel's large quality decline, but it's inaccurate to be drawing out these type of comparisons. Also Hermes quality has dropped too.
Coco would've turned if she saw Karl's first runway show.
Different leathers will crease differently - yes. No one disagrees there.
That said bag was also new. Not worn hence shouldn‘t be that way.
Caviar to Caviar - the creasing should be similar, not because the leather is ‘thinner’. How can the caviar manufacturing process be different from one colour to another ? Not too logical to me. Like I said, I am not comparing lambskin to caviar.
That‘s why I said same type of leather comparison (Togo to Togo, Epi to Epi, Smooth calf to smooth calf). Other houses - the same type of leather comes with the similar characteristics for all bags, in spite of the different colours.
The manufacturing for the style of bag in the same leather should be consistent across board. It isn’t a mass factory manufactured bag from a Chinese factory.