I'm not really familiar with powersaves myself. I just heard about them off a video for getting whatever pokemon you want via SD card, functional internet, a desktop computer, and a website for pokehex or genning. Since I don't own one I wouldn't know. My best guess is it is genned, because no one in their right mind would be generous enough to trade something as rare as that, unless they found a 6iv ditto with a desirable nature in the friend safari, which is also a stretch. On the other hand it may be legit knowing Japan and other countries outright banning cheating devices such as r4s carts, power saves, or other 3rd party devices used to modify saves. Homebrew may also fit into this category, but that's unclear since it really isn't free to homebrew a video game console. The internet mentioned homebrewing to also get whatever you want, which may or may not be condoned by this community. I do know home banning users who modify their Nintendo switch, but never seen a solid example.