G-Line stack & reach

I see they corrected the diagram: https://us.brompton.com/g-line

Converted to inches for us backward Americans, the stack = 27.4" and reach = 19.8".

I have two bikes with 20" wheels, a Gocycle and a Bike Friday. On the Gocycle only seat height is adjustable, like the G-Line. On the BF both seat height and handlebar height are adjustable. On both, I have a more upright riding posture. Coincidentally, without comparing the two, I have adjusted the seat height almost the same, and the BF reach is adjusted about the same as the Gocycle, which is non-adjustable. I am 6'-1"

The reach on both bikes is almost the same as the G-Line measurement shown in the diagram. However, on both of my bikes, the stack height is about 30", about 2.5" higher than the G-Line. This would give me a more hunched over posture, as there is no handlebar height adjustment.

I see this as a negative for me. I'll definitely have to wait to ride a large G-Line to see if I like the fit.