You can tell based on the pattern of damage. Handcuffs placed very tightly will bite into the skin and cause skin damage to the immediate site, typically beyond the epidermal layer, and because they are cutting off circulation, will cause ischemic injury to areas distal to the handcuff placement and deep to the integumentary borders (because nerves especially are a little more prone to damage due to hypoxia, dying in as little as 3-5 minutes if the area is completely hypoxic). The damage would essentially be similar in appearance to the ligature marks made during a strangulation; you'd see a band of very damaged tissue. If the only thing that had occurred to damage this individual's skin was handcuffs being too tight, you'd see the line that is pictured in the second and third images, more damage from it, and it would be the only injury.

If you look at picture 1 and 3, you can see that the damage is very wide compared to the handcuff width, and not localized in a single band. The damage is also all superficial, at it looks like it barely went through to the dermis, much less the hypodermis. These seem like scrapes from the individual pulling and twisting against the cuffs.