Only 3 of Nintendo's Wii U games wouldn't fit on a Wii disc

[d21lewis]

Mati_Intrieri said:
Wii discs are DVD-based discs with a capacity of 4.7/8.54 GB
Wii U discs are BluRay-based discs with a capacity of 25 GB

So, most Wii U games are wasting at least 17 GB?

Maybe the discs have a lot of redundant data and the downloads just have the necessary files.  I don't know.