Plan speeds only guaranteed over wired.

If plan speeds are only guaranteed over a wired connection then why do you only put one 500mb port, two 100mb ports, and one 1000+ port on the back of a XB7 router? so basically 1 person in a whole house hold is going to be getting max speed while the rest have to deal with under that. The WiFi reception on the XB7 is just awful compared to the XB6, and I know the reason must be to encourage xFi pod sales because they aesthetically go with the XB7 and XB8.