Characters, hissatsu techniques (special moves), and pitches are rendered using the vastly superior 3DS hardware engine, providing cleaner lines and optional stereoscopic 3D effects.
While this specific collection is Japan-only, individual versions of the games were released in Europe for the DS and 3DS. For example, Inazuma Eleven 3: Team Ogre Attacks! is available in English as a standalone title. i--- Inazuma Eleven 1-2-3 Endou Mamoru Densetsu English
A clean digital dump (ROM) of Inazuma Eleven 1-2-3: Endou Mamoru Densetsu (Japanese region). hissatsu techniques (special moves)
More detailed, focuses on the technical aspect of the collection and the English localization. i--- Inazuma Eleven 1-2-3 Endou Mamoru Densetsu English