I found that there's a few artists who post some of their pictures in their Twitter with a larger resolution than their Pixiv counterparts (Neki (Wakiko) and Yomu (Sgt Epper) for example); and I see there may be valid reasons to make either of them the parent post, but I'm not sure which one should be it.
Personally, I think the Pixiv version of a picture generally should be the parent in case they're the same, but the Twitter versions by these two artists in particular are absurdres and if we compare them to their Pixiv counterparts, the Pixiv ones have lower resolution. Like post #2594647, post #2600294, post #2630931 and post #2630933, to mention some.
And so, I want to ask something. In the case of having two posts with different sources which are the same picture, but the Pixiv one has lower resolution than the other (said second source can be anywhere the artist posted it, doesn't have to only be Twitter), which one should be the parent?
@Mikaeri gave me the idea of asking about this issue in the forum when I asked them about the parent-child relationship on post #2639668.
(I apologize if you were about to create this same topic, Mikaeri)