Dude. They're the same width. The reason you probably see such a difference is because the uprights are so short and stubby compared to the tall ones you're used to now.
Wanna know how I know for sure, besides just using common sense? Look at where all four of the uprights are in relation to the hash marks. Same. Riddle solved. If you still doubt it, we can find an architecture student to do a perspectives rendering to prove it. Same.
Same.