User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-4003956-20120423163831/@comment-1011548-20120423212832

Moving from one planet too another is a whole different league of crazy, looking at MH technology levels.

I'm not sure how having a high oxygen concentration give wings more lift-per-flap, but even if that's the case, you know what else allows you to fly with less flapping? Lower levels of gravity.

I think I've spotted the fundamental error that you're making. Developing in what would be, to us, low gravity conditions, would not affect the monsters in relation to each other. It's like saying "If that planet is completely covered in water, why haven't all the organisms drowned?" The conditions have been there for millions upon millions for years - all the creatures there will have adapted to them. The low gravity only would be a problem if you took a creature from Earth, or somewhere else with higher gravity, and stuck them on MH world.