I want to be optimistic about Astral Chain's sales as anyone, but let's be honest, the use of it's #1 status on the U.K. charts is really dishonest here. #1 doesn't mean anything if the sales for all software are quite tame in that period. It was only PlatinumGames' 4th biggest launch in the U.K., it was beaten by Bayonetta 2 on the Wii U there.
Don't get me wrong - digital sales will put it ahead and yadha yadha, it will probably pass 1 mil, and it could even see a massive increase from Bayonetta 2 in territories such as NA. But in the end that #1 figure should really not be used, because it's completely relative.