* Larger foot, lower weight: A person with large feet but low body weight might have *lower* foot pressure than someone with smaller feet and higher body weight. The area is larger, but the force (weight) is smaller.
* Larger foot, higher weight: A large person with large feet might have *higher* overall pressure, even though the area is larger, because the force (weight) is significantly greater.
* Foot shape and gait: Foot shape (e.g., arch height) and gait (how a person walks) significantly influence pressure distribution. Someone with high arches might concentrate pressure on smaller areas even with larger feet, while someone with flat feet might distribute it more evenly.
* Shoes: Footwear significantly affects pressure distribution, independent of foot size.
In short: Foot size is one factor among many influencing foot pressure. It's not a reliable predictor on its own. To determine foot pressure accurately, you need to measure both the force (weight) and the area of contact.