Ocarina of Time vs. Wind Waker
Twilight Princess vs. Skyward Sword (install base was larger at this release)
I mean, it's not enough data for a conclusive correlation, but it's something to consider at least. Also "that audience" is the Ocarina/Twilight audience.
OoT had a larger install base in general, and especially in NA, and is considered one of the greatest games ever.
The Wii was dead when SS came out, and it needs motion + to play, right?
But you already said that it wasn't conclusive anyway, so no need to say more I guess.
In your comparisons, how come you didn't list
OoT3D vs ALBW? ALBW defintely had cartoonier aesthetic and is selling worse despite being completly new.
lol, now I'm making your argument for you.