Well the writer has stated they always wanted this to be a part of the metroid universe. Is it a metroid game? Yes it is. Has the same lore, characters, universe, etc.

It’s like if you have 2 brothers from the same family. Greg Johnson and Steve Johnson. You know Greg, he’s been awesome and you love him! You call him…

This person has it right.

It isn’t iOS. It’s a remake for the 3DS featuring graphics that work fine on the 3DS, encountering enemies on the world map, 2 new characters which means 2 more characters to fully voice for cutscenes, endings, etc. that stuff takes time. Especially when their team just finished DQ7. It would…