This movie remines me on both Deep Impact and The Day After tomorrow with different plotlines that are happening and a disaster that are connected with each other. I found the movie to be just alright because the movie does try to have a lot of character development into it and the emotional parts throughout it. But I felt the movie is way too long with the movie mostly focus on explanation and drama that you see in any other disaster movies out there. It also kind of confusing to follow with the amount of stuff that happen in it and some of them isn't that interesting to watch. But the disaster scenes are pretty effective with the amount of danger that the characters are in and the destruction it cause to the countries. The CGI isn't that great, but I seen worst in other movies out there.
Doomsday: The Sinking of Japan is a passable movie that has some effective disaster scenes, but isn't that enjoyable to watch.