Mass is not weight. Weight depends upon what you\'re standing on. You\'d weigh less on an asteroid. However, mass is how much matter is within you, and is independent of the setting.
However, once you get into relativistic speeds, you can gain mass, so really you want to talk of inertia, not mass, for certain things.
Now then, Lordbug, if something has the same mass, it has the same weight on a given surface, say a planet. Falling has nothing to do with mass. However, lifting depends on inertia (an object\'s tendency to stay at a constant velocity until a force is acted upon it). It takes more energy to move objects with more inertia because they resist change much more than ones with less inertia, but that has absolutely nothing to do with how quickly something will hit the ground.
I hope to have cleared this up.