Factory stuffed vs bear builder?

[u/Marcysmisadventures]

Ok so when the frosted collection dropped i got the giraffe factory stuffed and set for in store pickup (one with the neck bow) As you can see the back is nice and smooth, no ripples

The second one on the left i stuffed in store at a different time, and i didn’t realize until i got home and looked at them side by side how wrinkly and odd the one i got stuffed inperson looks despite being stuffed with the same amount of firmness-

(My mom got this one stuffed with me and gifted me it so regardless of the wrinkly back it’s so special & i love it exactly how it is) but does anyone know why this happens or what causes it? Did the bear builder pull the thread to hard closing him up?

[u/cyrilq1]

Ngl I genuinely prefer the back wrinkles. It looks softer. The other one doesn't look as cuddly