Thanks again, SLAYER. I appreciate your help. At this point, I think I can count on you to answer questions that bother me for hours.
So, I think it's safe to say definitively, The shiny Genesect SHOULD be in Japanese, but there are no specific checks on the language, so while it's clear to US that there is something wrong with it (Because English), there isn't actually anything wrong with it because it's data that was never there to be tracked to begin with. So, Japanese Genesect just looks more legitimate to those who know of it. English ones are obviously edited in some form or fashion, but still legal.