No, the specs are right. The 40 size is:

Wing Span: 47.75 in (1212.85mm)
Overall Length: 48.38 in (1228.73mm)
Wing Area: 747.37 sq in (48.2 sq dm)

The 60 size Twist is :

Wing Span: 54.75 in (1391mm)
Overall Length: 56.6 in (1438mm)
Wing Area: 992 sq in (64 sq dm)

It weighs about a pound more.