Real size of 380?

I was looking at the Airport Planning Manual for Airbus 380, and tried to get an idea of the cabin width. See

http://www.content.airbusworld.com/SITES/Technical_Data/docs/AC/DATA_CONSULT/AC_A380.pdf
pages 30 and 31. They only give the data for one default layout, 2 cross-sections each deck.

And compare it with Boeing 747, see

planning manual
page 31 and around – there are many other options.

When I sum up the seat block and aisle width on Boeing 747, I get 605-610cm on main deck (e. g. 609,3 cm on page 31) – a few cm comes from rounding errors and small gaps. Fits well with the alleged 610 cm width.

But on Airbus 380 main deck I get 630 cm in Economy, 629 cm in First.

Consistent with each other – but where is the 658 cm width reported on the Airbus main page? What you get on Airbus 380 over and above Boeing 747 seems to be just 2 cm per seat and 1 cm wider aisles!