No it doesn't mean that, people already tried to explain to you sveral times:
Install tetherme/Mywi or PDANet on your IPHONE, it will allow you to couple your Data connection on your IPHONE to the WIFI on your IPHONE, it will create a hotspot with your WIFI on your IPHONE.
Now you can connect your iPad to the wifi hotspot that your IPHONE is broadcasting and be able to use data from your IPHONE over the WIFI connection.
The USB stuff is revering to the otherway around, using your IPAD 3G/4G to create as an go-between to your laptop with either USB or Bluetooth
MYWI and PDANet can do that. it gives you some options
Just install it.
Install tetherme/Mywi or PDANet on your IPHONE, it will allow you to couple your Data connection on your IPHONE to the WIFI on your IPHONE, it will create a hotspot with your WIFI on your IPHONE.
Now you can connect your iPad to the wifi hotspot that your IPHONE is broadcasting and be able to use data from your IPHONE over the WIFI connection.
The USB stuff is revering to the otherway around, using your IPAD 3G/4G to create as an go-between to your laptop with either USB or Bluetooth
MYWI and PDANet can do that. it gives you some options
Just install it.