IDK much about SE, except that they're based in Japan.
In the anime/manga industry, the japanese get their content before the u.s.
In some cases, way before. Yuyu Hakusho aired in america 10 years after it's japanese air date.
Dragon ball z aired in america 7 years after it's japanese air date.
This trend exists due to dubbing, licensing, etc.
This trend still exists, except americans get their content 1-2 years after the japanese. The newest dbz movie is just airing in the u.s., while it's been out for a year in japan.
Maybe SE also has to do through some of the same obstacles that those anime/manga companies go through to get their content to the u.s.
cut them some slack
The hell!? None of these things apply to Square Enix at all
Your question was answered by my first statement.
I would assume that the dubbing process that SE does prevents the game from being released asap.