Originally Posted by Fat voodoo pimp
NPCs are irrelevant for parameters - Victory Road was only a good choice because it had high-level Pokémon and was easily accessible. Anywhere with high-level Pokémon works fine, and if you can use Pokécheck
or some other means of getting exact IVs, you can do it anywhere at all.
I guess you're right because now that I think about it the WNPCs advance the PIDRNG frame which wouldn't affect the IVs