User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-5963861-20130927031528/@comment-4009941-20131007234643

@Raging rajang The change in atmosphere along with the gravity just goes on the list of things that make their world different from ours. But many of the animals are extremely similar to our worlds along with minor changes that make them unique to theirs just like our would be to them.

Does this still qualify as a alternate earth? with no major extinctions and change in how creatures developed it could still be a alternate earth that started with the same paths as our world did but over time changed to its own unique world. Gravity and atmosphere could have changed over time as well since their world may have had its own set of disasters we don't know about.