Yes, there is a difference.
Prota Box and Prota for Raspberry Pi are intended to be used by two distinct groups of people. Prota Box is designed to work straight out of its box. There is no assembling and both the operating system and all necessary hardware components come pre-installed. It means that just like with an ordinary computer, people can start using Prota Box as soon as they turn it on for the first time.
Prota for Raspberry Pi not only must be installed manually, but the Raspberry Pi computer itself also has to be assembled by hand. Furthermore, depending on what users will want to do with their Prota for Raspberry Pi, they might need to purchase and install additional hardware components such as a Bluetooth dongle or a WLAN card. This is why Prota for Raspberry Pi is made specifically for the ‘Do It Yourself’ community.
If you want a simple and easy to use solution that just works — choose Prota Box.