This is quite dependent on the age and prior sexual exposures. You have young wide hip females that have not exposed to sexual intercourse world for long, so their vaginal canals are not well developed and adaptive to larger penises. Once they are well seasoned, they will ask for larger and larger penises to have better enjoyment. I know many small hip females, young at that, are asking for 7inx5.5in to 10inx7in. You're talking abou petite females with hip no larger than teenagers, yet, they want vaginal-destroyers to rip them apart.
My wife is a wide hip female after giving birth to 4 children, and although her hips are wider, it doesn't mean her vaginal canal expanded to the point where a Hulk penis will satisfy her. At 7in long and 5.75in round penis size, it already made her quakes and toes curled. At 6in girth, she already bottomed out within 4in of insertion.
However, the perspective you need to think is the wider hips simply have a greater propensity to give birth easier. Vaginal canals are dependent on how much sexual relations they have and perference for pleasures. This is person-by-person basis. Overall, the Goldie Lock zone is pointing out between a 7inx5.5in to 8inx6in. Funny how that 0.5in makes a massive difference.