Because the pelvis come in all shapes and sizes, hip sockets can be shallow or deep, farther forward or back. The angle of the femur where it meets the pelvis vary, as well as how rotated the femur is where it meets the pelvis.
These ladies have tried both Conventional and Sumo styles of deadlifting and have found what feels the best and strongest for them.
The trap bar still involves picking up the weight off the floor using similar hip and knee hinge pattern, range of motion, and activation of muscle groups. The total weight of the bar is closer to your center of gravity so it’s easier to keep your balance and maintain a good spinal position, plus your shins don’t get in the way. I always start with the trap bar for deadlift beginners or those learning how to move their body when strength training. In addition to conventional or sumo deadlifting techniques, I use the trap bar for heavier sessions because most can generally deadlift more weight with the trap bar.