Why is "Nintendo" used as a qualifier for games?

[Dr.Henry_Killinger]

the_dengle said:

Dr.Henry_Killinger said:
Nintendo Game means 2 different things.
1. Games exclusive to the platform
2. Games developed by Nintendo or its 1st and 2nd party.

When describing it as a supergenre, (toats made that word up), its mainly 2.
When talking about the library of consoles its 1.

But that means saying "The Wii U is great if you like Nintendo games" is literally saying "The Wii U is great if its library appeals to you," which is simpler and more direct to say, and is absolutely no different from the PS4/XB1 (both of which are also great if and only if their libraries appeal to you).

That's exactly it. People just call them Nintendo games, in that regard, to downplay it instead of admitting it has a good library.

And again, I ask what is so similar about the vast range of experiences Nintendo offers that they can be presented as a single genre, super- or otherwise.

Supergenre is literally a collection of different genred tiles which are only similar in that they are developed by Nintendo.