I have trouble finding shoes that fit well here in the UK too! And I have wide feet - but wide at the ball of my foot and then narrow at the heel. The standard width shoes sold here are too narrow for me. And the wide shoes that will fit me at the ball of my foot are frequently too big at the heel - so I agree with whoever said the shape of the shoes is different. I was trying on some party shoes about a year ago - a couple pair that had those wide straps all around the heel...my ankles & heels were just swimming in them - it was beyond ridiculous! Oh where are those cankles when you need them?!

I've taken to sometimes buying men's shoes for a 'utility' shoe - like walking boots or trainers...the men's shoes like that seem to fit me better.
But finding pretty women's shoes that fit & feel good & comfortable - blah! And I don't think the selection is very good either. I was looking for some navy coloured shoes yesterday - googling a variety of UK websites, retailers, etc - and finding an abysmal/non-existent selection of the styles that I wanted
in my size. Yet I went on the US websites & retailers and instantly found pairs & pairs & pairs of exactly what I was looking for, and in sizes that I know will fit me - i.e., US 9 Wide! Good thing I'm going to the US soon - I see shoe shopping in my future - woohoo!!!
aimless, I always found Nine West too narrow as well, but I take a wide shoe in the US myself.